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Braid group

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will be straightforward. Consider two sets of four items lying on a table, with the items in each set being arranged in a vertical line, and such that one set sits next to the other. (In the illustrations below, these are the black dots.) Using four strands, each item of the first set is connected
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punctures. This is most easily visualized by imagining each puncture as being connected by a string to the boundary of the disk; each mapping homomorphism that permutes two of the punctures can then be seen to be a homotopy of the strings, that is, a braiding of these strings.
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of a braid consists of that braid which "undoes" whatever the first braid did, which is obtained by flipping a diagram such as the ones above across a vertical line going through its centre. (The first two example braids above are inverses of each other.)
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If a braid is given and one connects the first left-hand item to the first right-hand item using a new string, the second left-hand item to the second right-hand item etc. (without creating any braids in the new strings), one obtains a
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in fluid flows. The braiding of (2 + 1)-dimensional space-time trajectories formed by motion of physical rods, periodic orbits or "ghost rods", and almost-invariant sets has been used to estimate the
2208:{\displaystyle B_{n}=\left\langle \sigma _{1},\ldots ,\sigma _{n-1}\mid \sigma _{i}\sigma _{i+1}\sigma _{i}=\sigma _{i+1}\sigma _{i}\sigma _{i+1},\sigma _{i}\sigma _{j}=\sigma _{j}\sigma _{i}\right\rangle ,} 1687: 6459: 239: 205: 3404: 4418: 215: 273: 6586: 4429: 3540: 6594: 6381: 360: 5435: 340: 5703:
so that the function yields a permutation on endpoints—is isomorphic to this wilder group. An interesting fact is that the pure braid group in this group is isomorphic to both the
5118:{\displaystyle \sigma _{i}\left(x_{1},\ldots ,x_{i-1},x_{i},x_{i+1},\ldots ,x_{n}\right)=\left(x_{1},\ldots ,x_{i-1},x_{i+1},x_{i+1}^{-1}x_{i}x_{i+1},x_{i+2},\ldots ,x_{n}\right).} 2810: 350: 938: 6498: 6007: 1552: 2254: 320: 2995:. These transpositions generate the symmetric group, satisfy the braid group relations, and have order 2. This transforms the Artin presentation of the braid group into the 1287: 1278: 1269: 310: 300: 2400: 3871: 2606: 2296: 1948: 1921: 1894: 1517: 1380: 1350: 1320: 900: 6208: 5701: 5655: 3703: 3259:{\displaystyle S_{n}=\left\langle s_{1},\ldots ,s_{n-1}|s_{i}s_{i+1}s_{i}=s_{i+1}s_{i}s_{i+1},s_{i}s_{j}=s_{j}s_{i}{\text{ for }}|i-j|\geq 2,s_{i}^{2}=1\right\rangle .} 5324: 5609: 5547: 2738: 2576: 2544: 1618: 1164:
described two moves on braid diagrams that yield equivalence in the corresponding closed braids. A single-move version of Markov's theorem, was published by in 1997.
5919: 4316:{\displaystyle \sigma _{1}C\mapsto R={\begin{bmatrix}1&1\\0&1\end{bmatrix}}\qquad \sigma _{2}C\mapsto L^{-1}={\begin{bmatrix}1&0\\-1&1\end{bmatrix}}} 6529: 6411: 5970: 5732: 5488: 5363: 4083: 4032: 3734: 3660: 3488: 3453: 3323:-tuples of distinct points of the Euclidean plane. In a pure braid, the beginning and the end of each strand are in the same position. Pure braid groups fit into a 2765: 2705: 2667: 2636: 2511: 2475: 2427: 2375: 2344: 1998: 1444: 1413: 860: 594: 408: 106: 61: 4734:. (In essence, computing the normal form of a braid is the algebraic analogue of "pulling the strands" as illustrated in our second set of images above.) The free 3548: 5514: 5461: 4686:
arises in this fashion from at least one braid; such a braid can be obtained by cutting the link. Since braids can be concretely given as words in the generators
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In analogy with the action of the symmetric group by permutations, in various mathematical settings there exists a natural action of the braid group on
3749: 497:. Alternatively, one can define the braid group purely algebraically via the braid relations, keeping the pictures in mind only to guide the intuition. 6191:{\displaystyle \operatorname {UConf} _{n}(\mathbb {R} ^{2})=\{\{u_{1},...,u_{n}\}:u_{i}\in \mathbb {R} ^{2},u_{i}\neq u_{j}{\text{ for }}i\neq j\}} 1141:, i.e., a possibly intertwined union of possibly knotted loops in three dimensions. The number of components of the link can be anything from 1 to 3899: 5851: 476: 7700: 5260: 5180:
remains the identity element. It may be checked that the braid group relations are satisfied and this formula indeed defines a group action of
1869:(these relations can be appreciated best by drawing the braid on a piece of paper). It can be shown that all other relations among the braids 1189:
The "braid index" is the least number of strings needed to make a closed braid representation of a link. It is equal to the least number of
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Stremler, Mark A.; Ross, Shane D.; Grover, Piyush; Kumar, Pankaj (2011), "Topological chaos and periodic braiding of almost-cyclic sets",
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In addition to the word problem, there are several known hard computational problems that could implement braid groups, applications in
1446:. To see this, an arbitrary braid is scanned from left to right for crossings; beginning at the top, whenever a crossing of strands 1632: 7113: 6416: 8155: 7894: 7869: 7200: 7127: 3332: 791:
strings. Since we must require that the strings never pass through each other, it is necessary that we pass to the subspace
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by drawing the first next to the second, identifying the four items in the middle, and connecting corresponding strands:
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As Magnus says, Hurwitz gave the interpretation of a braid group as the fundamental group of a configuration space (cf.
8642: 8043: 6839: 5549:(i.e., by attaching a trivial strand). This group, however, admits no metrizable topology while remaining continuous. 8826: 7562: 6793:
Cohen, Daniel; Suciu, Alexander (1997). "The Braid Monodromy of Plane Algebraic Curves and Hyperplane Arrangements".
6468: 5977: 1233: 494: 3500: 189:. Often some strands will have to pass over or under others, and this is crucial: the following two connections are 6709:{\displaystyle \omega _{k,\ell }\omega _{\ell ,m}+\omega _{\ell ,m}\omega _{m,k}+\omega _{m,k}\omega _{k,\ell }=0.} 4708: 1415:
can be written as a composition of a number of these braids and their inverses. In other words, these three braids
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On the other hand, two such connections which can be made to look the same by "pulling the strands" are considered
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There are many ways to generalize this notion to an infinite number of strands. The simplest way is to take the
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Another field of intense investigation involving braid groups and related topological concepts in the context of
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The second group can be thought of the same as with finite braid groups. Place a strand at each of the points
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Different braids can give rise to the same link, just as different crossing diagrams can give rise to the same
248: 5388: 5271:, the projective representations of the braid group have a physical meaning for certain quasiparticles in the 8637: 8632: 8508: 7757: 7545:. Lecture Notes Series, Institute for Mathematical Sciences, National University of Singapore. Vol. 19. 7057: 4735: 500:
To explain how to reduce a braid group in the sense of Artin to a fundamental group, we consider a connected
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Gouillart, Emmanuelle; Thiffeault, Jean-Luc; Finn, Matthew D. (2006), "Topological mixing with ghost rods",
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with an item of the second set so that a one-to-one correspondence results. Such a connection is called a
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described a family of more general "Lawrence representations" depending on several parameters. In 1996,
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gives necessary and sufficient conditions under which the closures of two braids are equivalent links.
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for GAP3 with special support for braid groups. The word problem is also efficiently solved via the
7769: 6338:{\displaystyle H^{*}(B_{n})=H^{*}(K(B_{n},1))=H^{*}(\operatorname {UConf} _{n}(\mathbb {R} ^{2})).} 3631:
Furthermore, the modular group has trivial center, and thus the modular group is isomorphic to the
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demonstrates that every link can be obtained in this way as the "closure" of a braid. Compare with
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is the Euclidean plane is the original one of Artin. In some cases it can be shown that the higher
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is in the center, the modular group has trivial center, and the above surjective homomorphism has
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and the set of all braids—where a braid is defined to be a collection of paths from the points
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of the infinitely punctured disk—a discrete set of punctures limiting to the boundary of the
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as a braid invariant and then showed that it depended only on the class of the closed braid.
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and Daan Krammer independently proved that all braid groups are linear. Their work used the
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elements. This assignment is onto and compatible with composition, and therefore becomes a
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in 1947. Braid groups are also understood by a deeper mathematical interpretation: as the
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To put the above informal discussion of braid groups on firm ground, one needs to use the
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Read, N. (2003), "Nonabelian braid statistics versus projective permutation statistics",
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is in the theory and (conjectured) experimental implementation of the proposed particles
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if the elements are given in terms of these generators. There is also a package called
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Via this mapping class group interpretation of braids, each braid may be classified as
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Fabel, Paul (2006), "The mapping class group of a disk with infinitely many holes",
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Some of Wilczek-Nayak's proposals subtly violate known physics; see the discussion
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yields a different group. The first is a very tame group and is isomorphic to the
3822:{\displaystyle a=\sigma _{1}\sigma _{2}\sigma _{1},\quad b=\sigma _{1}\sigma _{2}} 257:
All strands are required to move from left to right; knots like the following are
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Fabel, Paul (2005), "Completing Artin's braid group on infinitely many strands",
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This sequence splits and therefore pure braid groups are realized as iterated
1600:. Upon reaching the right end, the braid has been written as a product of the 32: 8810: 8698: 8486: 8479: 8474: 8112: 8076: 7798: 7538: 7325: 5704: 5264: 5256: 3495: 2996: 2438: 2347: 1210: 1167: 36:
A regular braid on five strands. Each arrow composes two further elements of
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with a braid group action. Such structures play an important role in modern
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of several engineered and naturally occurring fluid systems, via the use of
8713: 8693: 8597: 8580: 8376: 8313: 8071: 7578: 7187:. Lecture Notes in Mathematics. Vol. 372. Springer. pp. 463–487. 7012: 6950: 5739: 5382: 5252: 4759: 4675: 3977:{\displaystyle \sigma _{1}c\sigma _{1}^{-1}=\sigma _{2}c\sigma _{2}^{-1}=c} 2677: 2434: 2378: 1240: 1150: 113: 7723: 7185:
Proceedings of the Second International Conference on the Theory of Groups
6816: 1243:), an interpretation that was lost from view until it was rediscovered by 8728: 8491: 8396: 8265: 8245: 8235: 8227: 8219: 8164: 7665: 7353: 7109: 6807: 6745: 2919: 2907: 2299: 132: 68: 8102: 7682: 7339:-Dimensional Spinor Braiding Statistics in Paired Quantum Hall States", 5251:. More generally, it was a major open problem whether braid groups were 5240:. It had been a long-standing question whether Burau representation was 8748: 8733: 8688: 8585: 8538: 8533: 8528: 8358: 8255: 8107: 7916: 7790: 7698:; Weiermann, Andreas (2011), "Unprovability results involving braids", 7594: 7398: 7245: 7219: 7192: 7180: 7003: 5922: 3740: 2929: 2768: 2430: 1225: 1202: 359: 144: 7415: 463:
and so their abstract study is currently of fundamental importance in
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strands operating on the indices of coordinates. That is, an ordered
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is the braid consisting of four parallel horizontal strands, and the
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Relationship to the mapping class group and classification of braids
2298:. This presentation leads to generalisations of braid groups called 8738: 8348: 8052: 5852:
Configuration space (mathematics) § Connection to braid groups
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can be represented more concretely by matrices. One classical such
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for the braid relations is efficiently solvable and there exists a
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Configuration space (mathematics) § Connection to braid groups
7714: 349: 8122: 7541:(1 December 2009). "Configuration Spaces, Braids, and Robotics". 7118:, Annals of Mathematics Studies, vol. 82, Princeton, N.J.: 7029: 4342:; it is well known that these moves generate the modular group. 1137:, i.e., corresponding ends can be connected in pairs, to form a 147:'s canonical presentation of the braid group corresponds to the 8758: 8406: 8366: 2546:
by adding an extra strand that does not cross any of the first
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Behind the Math of "Dance Your PhD," Part 1: The Braid Groups.
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By forgetting how the strands twist and cross, every braid on
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1 + 1 − 1 + 1 + 1 = 3
1682:{\displaystyle \sigma _{1}\sigma _{3}=\sigma _{3}\sigma _{1}} 1068: 319: 7767:(1972), "Les immeubles des groupes de tresses généralisés", 6838:
Boyland, Philip L.; Aref, Hassan; Stremler, Mark A. (2000),
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showed that the integral cohomology of the pure braid group
5338:. By suitably specializing these variables, the braid group 3416: 3317:. This can be seen as the fundamental group of the space of 1695:
while the following two relations are not quite as obvious:
8718: 8021: 6454:{\displaystyle \operatorname {Conf} _{n}(\mathbb {R} ^{2})} 2552:
strands. The increasing union of the braid groups with all
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is the quotient by the symmetric group of the non-excluded
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already follow from these relations and the group axioms.
711:-fold symmetric product is the abstract way of discussing 7693: 7034:
Recueil Mathématique de la Société Mathématique de Moscou
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that can be imposed on the resulting group each of whose
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posited that in analogy to projective representations of
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that involves some "twists". Consider an arbitrary group
112:, is the group whose elements are equivalence classes of 6386:
Similarly, a classifying space for the pure braid group
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up to homotopy. A classifying space for the braid group
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Relation with symmetric group and the pure braid group
2898:. This proves that the generators have infinite order. 210:   is different from    7877: 7688: 6597: 6541: 6510: 6477: 6419: 6392: 6354: 6211: 6038: 6015: 5986: 5951: 5931: 5892: 5865: 5751: 5713: 5663: 5617: 5577: 5522: 5496: 5469: 5443: 5391: 5344: 5289: 5174:– this ensures that the product of the components of 4847: 4432: 4413:{\displaystyle \langle v,p\,|\,v^{2}=p^{3}=1\rangle } 4358: 4182: 4064: 4040: 4013: 3993: 3902: 3879: 3839: 3752: 3715: 3672: 3641: 3551: 3503: 3469: 3434: 3335: 3008: 2878: 2783: 2746: 2720: 2686: 2648: 2617: 2587: 2558: 2519: 2487: 2456: 2408: 2386: 2356: 2325: 2262: 2224: 2013: 1979: 1959: 1929: 1902: 1875: 1790: 1707: 1635: 1606: 1580: 1560: 1525: 1498: 1472: 1452: 1425: 1394: 1361: 1331: 1301: 1101: 1077: 1053: 1031: 1011: 986: 966: 946: 908: 868: 841: 817: 797: 777: 757: 737: 717: 697: 670: 650: 626: 602: 575: 555: 535: 509: 389: 87: 42: 7941:
Lecture 1.3: Groups in science, art, and mathematics
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The set of all braids on four strands is denoted by
345:    composed with     305:    composed with     244:    is the same as    7030:"Über die freie Äquivalenz der geschlossenen Zöpfe" 6837: 1209:pointed out in 1974) they were already implicit in 940:. This is invariant under the symmetric group, and 7303:Garber, David (2009). "Braid Group Cryptography". 7149: 7050: 6708: 6581:{\displaystyle \omega _{ij}\;\;1\leq i<j\leq n} 6580: 6535:generated by the collection of degree-one classes 6523: 6492: 6453: 6405: 6375: 6337: 6190: 6021: 6001: 5964: 5937: 5913: 5879:is defined as the cohomology of the corresponding 5871: 5834: 5726: 5695: 5649: 5603: 5541: 5508: 5482: 5455: 5429: 5357: 5318: 5117: 4532: 4412: 4315: 4077: 4046: 4026: 3999: 3976: 3885: 3865: 3821: 3728: 3697: 3654: 3619: 3534: 3482: 3447: 3398: 3258: 2890: 2804: 2759: 2732: 2699: 2661: 2630: 2600: 2570: 2538: 2505: 2469: 2421: 2394: 2369: 2338: 2290: 2248: 2207: 1992: 1965: 1942: 1915: 1888: 1856: 1773: 1681: 1612: 1592: 1566: 1546: 1511: 1484: 1458: 1438: 1407: 1374: 1344: 1314: 1107: 1083: 1059: 1037: 1017: 992: 972: 952: 932: 894: 854: 823: 803: 783: 763: 743: 723: 703: 676: 656: 632: 608: 588: 561: 541: 515: 402: 100: 55: 8163: 688:as any other that is a re-ordered version of it. 8808: 7629:"The cohomology ring of the colored braid group" 4678:states that the converse is true as well: every 835:points. That is, we remove all the subspaces of 131:). Example applications of braid groups include 27:Group whose operation is a composition of braids 7581:(1970). "Cohomology of the braid group mod 2". 5244:, but the answer turned out to be negative for 5236:, where the matrix entries are single variable 3893:, one may verify from the braid relations that 7701:Proceedings of the London Mathematical Society 3535:{\displaystyle \mathrm {PSL} (2,\mathbb {Z} )} 410:. The above composition of braids is indeed a 8149: 8037: 7664: 4338:are the standard left and right moves on the 1554:is written down, depending on whether strand 355:    yields     315:    yields     7853: 7824:; Neuwirth, Lee (1962), "The braid groups", 7486:Journal of Knot Theory and Its Ramifications 7440:Journal of Knot Theory and Its Ramifications 7323: 6185: 6114: 6076: 6073: 5826: 5752: 4656: 4407: 4359: 2000:can be abstractly defined via the following 7820: 7745: 7623: 7258: 7055:(1997), "Markov's theorem in 3-manifolds", 1255: 1201:Braid groups were introduced explicitly by 8156: 8142: 8044: 8030: 7214: 7212: 6792: 6556: 6555: 6376:{\displaystyle \mathbb {Z} /2\mathbb {Z} } 5385:of braid groups, where the attaching maps 2306:, play an important role in the theory of 1220:Braid groups may be described by explicit 431:Braid theory has recently been applied to 7837: 7713: 7681: 7497: 7451: 7397: 7352: 7308: 7279: 7070: 7002: 6992: 6916: 6840:"Topological fluid mechanics of stirring" 6806: 6480: 6438: 6369: 6356: 6316: 6135: 6057: 6029:distinct unordered points in the plane: 5989: 5780: 4377: 4371: 3833:From the braid relations it follows that 3610: 3573: 3525: 2798: 2388: 7583:Functional Analysis and Its Applications 5552:Paul Fabel has shown that there are two 5430:{\displaystyle f\colon B_{n}\to B_{n+1}} 4698: 3424: 1003:With this definition, then, we can call 178:; the generalization to other values of 31: 7763: 7209: 7115:Braids, links, and mapping class groups 4567:yields a surjective group homomorphism 980:-tuples. Under the dimension condition 811:of the symmetric product, of orbits of 14: 8809: 7991: 7537: 7302: 7175: 7143: 7108: 7024: 2767:contains a subgroup isomorphic to the 2256:and in the second group of relations, 2218:where in the first group of relations 8137: 8025: 7483: 7437: 7218: 6773: 6348:The calculations for coefficients in 5365:may be realized as a subgroup of the 4631:can be shown to be isomorphic to the 2805:{\displaystyle B_{n}\to \mathbb {Z} } 2313: 1260:Consider the following three braids: 152: 8789: 8002: 7937: 7577: 7383: 7157:. MathWorld – A Wolfram Web Resource 4651:periodic, reducible or pseudo-Anosov 2302:. The cubic relations, known as the 8006:Representations of the Braid Groups 7952: 2437:– in particular, it is an infinite 1250: 470: 24: 7980:Cryptography and Braid Groups page 7976: 7657: 5214: 5149:exchange places and, in addition, 4599:, a consequence of the facts that 3873:. Denoting this latter product as 3705:and equivalently, to the group of 3596: 3593: 3590: 3559: 3556: 3511: 3508: 3505: 2593: 933:{\displaystyle 1\leq i<j\leq n} 771:-tuple, independently tracing out 25: 8843: 7904: 7689:Menasco & Thistlethwaite 2005 6795:Commentarii Mathematici Helvetici 5377:Infinitely generated braid groups 640:by the permutation action of the 278:   is not a braid 128: 8788: 8777: 8776: 6493:{\displaystyle \mathbb {R} ^{2}} 6002:{\displaystyle \mathbb {R} ^{2}} 2872:is the identity if and only if 1547:{\displaystyle \sigma _{i}^{-1}} 1285: 1276: 1267: 1118: 358: 348: 338: 318: 308: 298: 271: 247: 237: 213: 203: 7958:"Exploration of B5 Java applet" 7617: 7571: 7531: 7429: 7386:Journal of Mathematical Physics 7317: 7296: 7252: 7169: 5281:Lawrence–Krammer representation 4753:Lawrence–Krammer representation 4481: 4241: 3792: 3739:Here is a construction of this 2902: 2249:{\displaystyle 1\leq i\leq n-2} 1133:is the plane, the braid can be 446:Nielsen–Thurston classification 435:, specifically to the field of 426: 166: 8643:Dowker–Thistlethwaite notation 7102: 7044: 7018: 6994:10.1103/PhysRevLett.106.114101 6964: 6896: 6831: 6786: 6767: 6448: 6433: 6329: 6326: 6311: 6295: 6279: 6276: 6257: 6251: 6235: 6222: 6067: 6052: 5908: 5896: 5769: 5755: 5690: 5664: 5644: 5618: 5598: 5578: 5408: 5305: 5293: 5273:fractional quantum hall effect 4738:can carry out computations in 4373: 4255: 4196: 3689: 3676: 3614: 3600: 3586: 3577: 3563: 3529: 3515: 3390: 3371: 3358: 3339: 3214: 3200: 3063: 2950:from the braid group onto the 2849:. This map corresponds to the 2794: 2500: 2488: 2278: 2264: 1184: 368:The composition of the braids 127:is composition of braids (see 13: 1: 7933:Algebraic Cryptography Center 7927:computation library from the 7925:CRAG: CRyptography and Groups 7081:10.1016/S0166-8641(96)00151-4 7058:Topology and Its Applications 6761: 6383:can be found in Fuks (1970). 5845: 4776:-tuples of objects or on the 2822:. So for instance, the braid 2611:All non-identity elements of 1953:Generalising this example to 1193:in any projection of a knot. 1071:isomorphism). The case where 751:, considered as an unordered 523:of dimension at least 2. The 8051: 7371:10.1016/0550-3213(96)00430-0 7222:(1947). "Theory of Braids". 6751:Non-commutative cryptography 5707:of finite pure braid groups 5219:Elements of the braid group 3581: 2395:{\displaystyle \mathbb {Z} } 7: 7753:Encyclopedia of Mathematics 7746:Chernavskii, A.V. (2001) , 6719: 6588:, subject to the relations 5326:depending on the variables 4736:GAP computer algebra system 4720:in terms of the generators 3866:{\displaystyle a^{2}=b^{3}} 3492:universal central extension 3457:universal central extension 2601:{\displaystyle B_{\infty }} 2291:{\displaystyle |i-j|\geq 2} 1943:{\displaystyle \sigma _{3}} 1916:{\displaystyle \sigma _{2}} 1889:{\displaystyle \sigma _{1}} 1574:moves under or over strand 1512:{\displaystyle \sigma _{i}} 1375:{\displaystyle \sigma _{3}} 1345:{\displaystyle \sigma _{2}} 1315:{\displaystyle \sigma _{1}} 895:{\displaystyle x_{i}=x_{j}} 489:, defining braid groups as 10: 8848: 7839:10.7146/math.scand.a-10518 7555:10.1142/9789814291415_0004 7281:10.7146/math.scand.a-10518 7120:Princeton University Press 6935:10.1103/PhysRevE.73.036311 6847:Journal of Fluid Mechanics 5849: 4838:in the following fashion: 4765: 2954:. The image of the braid σ 2853:of the braid group. Since 2676:There is a left-invariant 1247:and Lee Neuwirth in 1962. 1196: 1122: 474: 8772: 8676: 8633:Alexander–Briggs notation 8620: 8455: 8357: 8322: 8180: 8085: 8059: 7508:10.1142/S0218216506004324 7462:10.1142/S0218216505004196 7335:Quasihole States Realize 7036:(in German and Russian), 6867:10.1017/S0022112099007107 6731:Braided monoidal category 5696:{\displaystyle (0,1/n,1)} 5650:{\displaystyle (0,1/n,0)} 5197:braided monoidal category 4657:Connection to knot theory 4349:for the modular group is 3698:{\displaystyle Z(B_{3}),} 1047:the fundamental group of 171:In this introduction let 8827:Low-dimensional topology 7826:Mathematica Scandinavica 7770:Inventiones Mathematicae 7268:Mathematica Scandinavica 7262:; Neuwirth, Lee (1962). 7181:"Braid groups: A survey" 5319:{\displaystyle n(n-1)/2} 5195:. As another example, a 4345:Alternately, one common 2999:of the symmetric group: 1256:Generators and relations 8724:List of knots and links 8272:Kinoshita–Terasaka knot 7887:Handbook of Knot Theory 6973:Physical Review Letters 6531:is the quotient of the 5925:uniquely determined by 5604:{\displaystyle (0,1/n)} 5542:{\displaystyle B_{n+1}} 4804:-tuples of elements of 2733:{\displaystyle n\geq 3} 2571:{\displaystyle n\geq 1} 2539:{\displaystyle B_{n+1}} 1620:'s and their inverses. 1613:{\displaystyle \sigma } 1170:originally defined his 153:§ Basic properties 7992:Dalvit, Ester (2015). 7883:Thistlethwaite, Morwen 6710: 6582: 6525: 6494: 6455: 6407: 6377: 6339: 6192: 6023: 6009:, that is, the set of 6003: 5966: 5939: 5915: 5914:{\displaystyle K(G,1)} 5873: 5836: 5728: 5697: 5651: 5605: 5543: 5510: 5484: 5457: 5431: 5359: 5320: 5119: 4534: 4414: 4317: 4079: 4048: 4028: 4001: 3978: 3887: 3867: 3823: 3730: 3699: 3656: 3621: 3536: 3484: 3460: 3449: 3400: 3260: 2892: 2806: 2761: 2734: 2701: 2663: 2632: 2602: 2572: 2540: 2507: 2471: 2423: 2396: 2371: 2340: 2292: 2250: 2209: 1994: 1967: 1944: 1917: 1890: 1858: 1775: 1683: 1614: 1594: 1568: 1548: 1513: 1486: 1460: 1440: 1409: 1376: 1346: 1316: 1205:in 1925, although (as 1109: 1085: 1061: 1039: 1019: 994: 974: 954: 934: 896: 862:defined by conditions 856: 825: 805: 785: 765: 745: 725: 705: 684:-tuple is in the same 678: 658: 634: 610: 590: 569:means the quotient of 563: 543: 517: 404: 284:Any two braids can be 102: 64: 57: 8514:Finite type invariant 7948:. Clemson University. 7225:Annals of Mathematics 7051:Lambropoulou, Sofia; 6817:10.1007/s000140050017 6756:Spherical braid group 6711: 6583: 6526: 6524:{\displaystyle P_{n}} 6495: 6456: 6408: 6406:{\displaystyle P_{n}} 6378: 6340: 6193: 6024: 6004: 5967: 5965:{\displaystyle B_{n}} 5940: 5916: 5874: 5858:cohomology of a group 5837: 5729: 5727:{\displaystyle P_{n}} 5698: 5652: 5606: 5544: 5511: 5485: 5483:{\displaystyle B_{n}} 5458: 5432: 5360: 5358:{\displaystyle B_{n}} 5321: 5120: 4810:whose product is the 4762:have been suggested. 4699:Computational aspects 4535: 4415: 4318: 4116:and one may take the 4080: 4078:{\displaystyle B_{3}} 4049: 4029: 4027:{\displaystyle B_{3}} 4002: 3979: 3888: 3868: 3824: 3731: 3729:{\displaystyle B_{3}} 3700: 3657: 3655:{\displaystyle B_{3}} 3622: 3537: 3485: 3483:{\displaystyle B_{3}} 3459:of the modular group. 3450: 3448:{\displaystyle B_{3}} 3428: 3421:and the modular group 3401: 3261: 2969:is the transposition 2918:strands determines a 2893: 2807: 2762: 2760:{\displaystyle B_{n}} 2735: 2702: 2700:{\displaystyle B_{n}} 2664: 2662:{\displaystyle B_{n}} 2633: 2631:{\displaystyle B_{n}} 2603: 2573: 2541: 2508: 2506:{\displaystyle (n+1)} 2472: 2470:{\displaystyle B_{n}} 2429:is isomorphic to the 2424: 2422:{\displaystyle B_{3}} 2397: 2372: 2370:{\displaystyle B_{2}} 2341: 2339:{\displaystyle B_{1}} 2308:Yang–Baxter equations 2293: 2251: 2210: 1995: 1993:{\displaystyle B_{n}} 1968: 1945: 1918: 1891: 1859: 1776: 1684: 1615: 1595: 1569: 1549: 1514: 1487: 1461: 1441: 1439:{\displaystyle B_{4}} 1410: 1408:{\displaystyle B_{4}} 1377: 1347: 1317: 1110: 1086: 1062: 1040: 1020: 995: 975: 955: 935: 897: 857: 855:{\displaystyle X^{n}} 826: 806: 786: 766: 746: 726: 706: 679: 659: 635: 611: 591: 589:{\displaystyle X^{n}} 564: 544: 518: 405: 403:{\displaystyle B_{4}} 108:), also known as the 103: 101:{\displaystyle B_{n}} 58: 56:{\displaystyle B_{5}} 35: 8015:expanded further in 7672:(26 February 2005), 7549:. pp. 263–304. 6741:Braided Hopf algebra 6736:Braided vector space 6595: 6539: 6508: 6475: 6417: 6390: 6352: 6209: 6036: 6013: 5984: 5949: 5929: 5890: 5863: 5814: for some  5749: 5711: 5661: 5615: 5575: 5520: 5494: 5467: 5441: 5389: 5367:general linear group 5342: 5287: 5234:Burau representation 5207:and lead to quantum 5205:mathematical physics 4845: 4430: 4356: 4180: 4062: 4038: 4011: 4007:is in the center of 3991: 3900: 3877: 3837: 3750: 3713: 3670: 3639: 3549: 3501: 3467: 3432: 3411:semi-direct products 3333: 3325:short exact sequence 3300:pure braid group on 3273:of the homomorphism 3006: 2997:Coxeter presentation 2876: 2781: 2744: 2718: 2684: 2646: 2615: 2585: 2580:infinite braid group 2556: 2517: 2513:-strand braid group 2485: 2454: 2450:-strand braid group 2406: 2384: 2354: 2323: 2260: 2222: 2011: 1977: 1957: 1927: 1900: 1873: 1788: 1705: 1633: 1604: 1578: 1558: 1523: 1496: 1470: 1450: 1423: 1392: 1359: 1329: 1299: 1234:configuration spaces 1099: 1075: 1051: 1029: 1009: 984: 964: 944: 906: 866: 839: 815: 795: 775: 755: 735: 715: 695: 668: 648: 624: 600: 573: 553: 533: 507: 387: 149:Yang–Baxter equation 141:mathematical physics 85: 40: 8684:Alexander's theorem 7946:Visual Group Theory 7854:Kassel, Christian; 7783:1972InMat..17..273D 7724:10.1112/plms/pdq016 7694:Carlucci, Lorenzo; 7408:2003JMP....44..558R 7363:1996NuPhB.479..529N 6985:2011PhRvL.106k4101S 6927:2006PhRvE..73c6311G 6859:2000JFM...403..277B 6469:configuration space 5978:configuration space 5562:mapping class group 5509:{\displaystyle n-1} 5456:{\displaystyle n-1} 5238:Laurent polynomials 5042: 4672:Alexander's theorem 4633:mapping class group 3967: 3933: 3707:inner automorphisms 3289:is the subgroup of 3241: 2891:{\displaystyle k=0} 1973:strands, the group 1593:{\displaystyle i+1} 1543: 1485:{\displaystyle i+1} 1290:    1281:    1272:    1005:the braid group of 1000:will be connected. 495:configuration space 465:quantum information 442:topological entropy 261:considered braids: 137:Alexander's theorem 129:§ Introduction 8118:3D braided fabrics 7995:Braids – the movie 7929:Stevens University 7791:10.1007/BF01406236 7595:10.1007/BF01094491 7264:"The braid groups" 7193:10.1007/BFb0065203 7151:Weisstein, Eric W. 6706: 6578: 6521: 6490: 6451: 6403: 6373: 6335: 6188: 6019: 5999: 5962: 5935: 5911: 5869: 5832: 5724: 5693: 5647: 5601: 5539: 5506: 5480: 5453: 5427: 5355: 5316: 5160:inner automorphism 5158:is twisted by the 5128:Thus the elements 5115: 5019: 4798:be the set of all 4666:, and sometimes a 4530: 4521: 4472: 4410: 4313: 4307: 4235: 4075: 4044: 4024: 3997: 3974: 3950: 3916: 3883: 3863: 3819: 3726: 3695: 3652: 3617: 3532: 3480: 3461: 3445: 3417:Relation between B 3396: 3256: 3227: 2933:group homomorphism 2888: 2802: 2771:on two generators. 2757: 2730: 2697: 2659: 2628: 2598: 2568: 2536: 2503: 2467: 2419: 2392: 2367: 2336: 2314:Further properties 2288: 2246: 2205: 1990: 1963: 1940: 1913: 1886: 1854: 1771: 1679: 1610: 1590: 1564: 1544: 1526: 1509: 1482: 1456: 1436: 1405: 1372: 1342: 1312: 1284:    1275:    1266:    1224:, as was shown by 1105: 1081: 1057: 1035: 1015: 990: 970: 950: 930: 892: 852: 821: 801: 781: 761: 741: 721: 701: 674: 654: 630: 606: 586: 559: 539: 513: 491:fundamental groups 487:algebraic topology 400: 161:algebraic geometry 98: 65: 53: 8804: 8803: 8658:Reidemeister move 8524:Khovanov homology 8519:Hyperbolic volume 8131: 8130: 8003:Scherich, Nancy. 7896:978-0-444-51452-3 7871:978-0-387-33841-5 7696:Dehornoy, Patrick 7625:Arnol'd, Vladimir 7416:10.1063/1.1530369 7341:Nuclear Physics B 7202:978-3-540-06845-7 7129:978-0-691-08149-6 6905:Physical Review E 6780:Wolfram Mathworld 6774:Weisstein, Eric. 6202:So by definition 6174: 6022:{\displaystyle n} 5938:{\displaystyle G} 5884:classifying space 5881:Eilenberg–MacLane 5872:{\displaystyle G} 5815: 5736:fundamental group 5201:monoidal category 5162:corresponding to 4340:Stern–Brocot tree 4047:{\displaystyle C} 4000:{\displaystyle c} 3886:{\displaystyle c} 3584: 3197: 2439:non-abelian group 1966:{\displaystyle n} 1623:It is clear that 1567:{\displaystyle i} 1459:{\displaystyle i} 1386: 1385: 1230:fundamental group 1162:Andrey Markov Jr. 1108:{\displaystyle Y} 1084:{\displaystyle X} 1060:{\displaystyle Y} 1038:{\displaystyle n} 1018:{\displaystyle X} 993:{\displaystyle Y} 973:{\displaystyle n} 953:{\displaystyle Y} 824:{\displaystyle n} 804:{\displaystyle Y} 784:{\displaystyle n} 764:{\displaystyle n} 744:{\displaystyle X} 724:{\displaystyle n} 704:{\displaystyle n} 677:{\displaystyle n} 657:{\displaystyle n} 633:{\displaystyle X} 618:Cartesian product 609:{\displaystyle n} 562:{\displaystyle X} 542:{\displaystyle n} 526:symmetric product 516:{\displaystyle X} 461:quantum computing 366: 365: 328:Another example: 326: 325: 282: 281: 255: 254: 221: 220: 110:Artin braid group 16:(Redirected from 8839: 8832:Diagram algebras 8792: 8791: 8780: 8779: 8744:Tait conjectures 8447: 8446: 8432: 8431: 8417: 8416: 8309: 8308: 8294: 8293: 8278:(−2,3,7) pretzel 8158: 8151: 8144: 8135: 8134: 8098:Braiding machine 8046: 8039: 8032: 8023: 8022: 8014: 7999: 7988: 7987:on 3 August 2009 7983:, archived from 7977:Lipmaa, Helger, 7973: 7971: 7969: 7960:. Archived from 7954:Bigelow, Stephen 7949: 7921: 7899: 7879:Menasco, William 7874: 7856:Turaev, Vladimir 7850: 7841: 7817: 7760: 7742: 7717: 7686: 7685: 7674:Braids: A Survey 7670:Brendle, Tara E. 7652: 7651: 7633: 7621: 7615: 7614: 7575: 7569: 7568: 7547:World Scientific 7535: 7529: 7526: 7501: 7480: 7455: 7433: 7427: 7426: 7401: 7381: 7356: 7354:cond-mat/9605145 7338: 7334: 7321: 7315: 7314: 7312: 7300: 7294: 7293: 7283: 7256: 7250: 7249: 7216: 7207: 7206: 7173: 7167: 7166: 7164: 7162: 7147: 7141: 7140: 7106: 7100: 7099: 7074: 7053:Rourke, Colin P. 7048: 7042: 7041: 7022: 7016: 7015: 7006: 6996: 6968: 6962: 6961: 6920: 6900: 6894: 6893: 6891: 6885:, archived from 6844: 6835: 6829: 6828: 6810: 6808:alg-geom/9608001 6790: 6784: 6783: 6771: 6726:Artin–Tits group 6715: 6713: 6712: 6707: 6699: 6698: 6683: 6682: 6664: 6663: 6648: 6647: 6629: 6628: 6613: 6612: 6587: 6585: 6584: 6579: 6554: 6553: 6533:exterior algebra 6530: 6528: 6527: 6522: 6520: 6519: 6499: 6497: 6496: 6491: 6489: 6488: 6483: 6460: 6458: 6457: 6452: 6447: 6446: 6441: 6429: 6428: 6412: 6410: 6409: 6404: 6402: 6401: 6382: 6380: 6379: 6374: 6372: 6364: 6359: 6344: 6342: 6341: 6336: 6325: 6324: 6319: 6307: 6306: 6294: 6293: 6269: 6268: 6250: 6249: 6234: 6233: 6221: 6220: 6197: 6195: 6194: 6189: 6175: 6172: 6170: 6169: 6157: 6156: 6144: 6143: 6138: 6129: 6128: 6113: 6112: 6088: 6087: 6066: 6065: 6060: 6048: 6047: 6028: 6026: 6025: 6020: 6008: 6006: 6005: 6000: 5998: 5997: 5992: 5971: 5969: 5968: 5963: 5961: 5960: 5944: 5942: 5941: 5936: 5920: 5918: 5917: 5912: 5878: 5876: 5875: 5870: 5841: 5839: 5838: 5833: 5816: 5813: 5811: 5810: 5798: 5797: 5785: 5784: 5783: 5767: 5766: 5733: 5731: 5730: 5725: 5723: 5722: 5702: 5700: 5699: 5694: 5680: 5656: 5654: 5653: 5648: 5634: 5610: 5608: 5607: 5602: 5594: 5548: 5546: 5545: 5540: 5538: 5537: 5515: 5513: 5512: 5507: 5489: 5487: 5486: 5481: 5479: 5478: 5462: 5460: 5459: 5454: 5436: 5434: 5433: 5428: 5426: 5425: 5407: 5406: 5364: 5362: 5361: 5356: 5354: 5353: 5337: 5331: 5325: 5323: 5322: 5317: 5312: 5270: 5250: 5227: 5194: 5188: 5179: 5173: 5157: 5148: 5136: 5124: 5122: 5121: 5116: 5111: 5107: 5106: 5105: 5087: 5086: 5068: 5067: 5052: 5051: 5041: 5033: 5015: 5014: 4996: 4995: 4971: 4970: 4953: 4949: 4948: 4947: 4929: 4928: 4910: 4909: 4897: 4896: 4872: 4871: 4857: 4856: 4837: 4828: 4819: 4812:identity element 4809: 4803: 4797: 4791: 4781: 4775: 4746: 4733: 4719: 4711:for elements of 4694: 4644: 4630: 4622:The braid group 4613: 4604: 4598: 4592: 4580: 4566: 4560: 4554: 4548: 4539: 4537: 4536: 4531: 4526: 4525: 4477: 4476: 4419: 4417: 4416: 4411: 4400: 4399: 4387: 4386: 4376: 4337: 4331: 4322: 4320: 4319: 4314: 4312: 4311: 4270: 4269: 4251: 4250: 4240: 4239: 4192: 4191: 4172: 4162: 4149: 4131: 4111: 4093: 4084: 4082: 4081: 4076: 4074: 4073: 4053: 4051: 4050: 4045: 4033: 4031: 4030: 4025: 4023: 4022: 4006: 4004: 4003: 3998: 3983: 3981: 3980: 3975: 3966: 3958: 3946: 3945: 3932: 3924: 3912: 3911: 3892: 3890: 3889: 3884: 3872: 3870: 3869: 3864: 3862: 3861: 3849: 3848: 3828: 3826: 3825: 3820: 3818: 3817: 3808: 3807: 3788: 3787: 3778: 3777: 3768: 3767: 3735: 3733: 3732: 3727: 3725: 3724: 3704: 3702: 3701: 3696: 3688: 3687: 3661: 3659: 3658: 3653: 3651: 3650: 3626: 3624: 3623: 3618: 3613: 3599: 3585: 3580: 3576: 3562: 3553: 3541: 3539: 3538: 3533: 3528: 3514: 3489: 3487: 3486: 3481: 3479: 3478: 3463:The braid group 3454: 3452: 3451: 3446: 3444: 3443: 3413:of free groups. 3405: 3403: 3402: 3397: 3389: 3388: 3370: 3369: 3357: 3356: 3322: 3316: 3305: 3297: 3288: 3265: 3263: 3262: 3257: 3252: 3248: 3240: 3235: 3217: 3203: 3198: 3195: 3193: 3192: 3183: 3182: 3170: 3169: 3160: 3159: 3147: 3146: 3131: 3130: 3121: 3120: 3102: 3101: 3092: 3091: 3076: 3075: 3066: 3061: 3060: 3036: 3035: 3018: 3017: 2994: 2968: 2949: 2927: 2917: 2897: 2895: 2894: 2889: 2871: 2862: 2848: 2844: 2821: 2811: 2809: 2808: 2803: 2801: 2793: 2792: 2766: 2764: 2763: 2758: 2756: 2755: 2739: 2737: 2736: 2731: 2706: 2704: 2703: 2698: 2696: 2695: 2668: 2666: 2665: 2660: 2658: 2657: 2637: 2635: 2634: 2629: 2627: 2626: 2607: 2605: 2604: 2599: 2597: 2596: 2577: 2575: 2574: 2569: 2551: 2545: 2543: 2542: 2537: 2535: 2534: 2512: 2510: 2509: 2504: 2476: 2474: 2473: 2468: 2466: 2465: 2449: 2428: 2426: 2425: 2420: 2418: 2417: 2401: 2399: 2398: 2393: 2391: 2377:is the infinite 2376: 2374: 2373: 2368: 2366: 2365: 2345: 2343: 2342: 2337: 2335: 2334: 2319:The braid group 2297: 2295: 2294: 2289: 2281: 2267: 2255: 2253: 2252: 2247: 2214: 2212: 2211: 2206: 2201: 2197: 2196: 2195: 2186: 2185: 2173: 2172: 2163: 2162: 2150: 2149: 2134: 2133: 2124: 2123: 2105: 2104: 2095: 2094: 2079: 2078: 2066: 2065: 2041: 2040: 2023: 2022: 1999: 1997: 1996: 1991: 1989: 1988: 1972: 1970: 1969: 1964: 1949: 1947: 1946: 1941: 1939: 1938: 1922: 1920: 1919: 1914: 1912: 1911: 1895: 1893: 1892: 1887: 1885: 1884: 1863: 1861: 1860: 1855: 1853: 1852: 1843: 1842: 1833: 1832: 1820: 1819: 1810: 1809: 1800: 1799: 1780: 1778: 1777: 1772: 1770: 1769: 1760: 1759: 1750: 1749: 1737: 1736: 1727: 1726: 1717: 1716: 1688: 1686: 1685: 1680: 1678: 1677: 1668: 1667: 1655: 1654: 1645: 1644: 1619: 1617: 1616: 1611: 1599: 1597: 1596: 1591: 1573: 1571: 1570: 1565: 1553: 1551: 1550: 1545: 1542: 1534: 1518: 1516: 1515: 1510: 1508: 1507: 1492:is encountered, 1491: 1489: 1488: 1483: 1465: 1463: 1462: 1457: 1445: 1443: 1442: 1437: 1435: 1434: 1414: 1412: 1411: 1406: 1404: 1403: 1381: 1379: 1378: 1373: 1371: 1370: 1351: 1349: 1348: 1343: 1341: 1340: 1321: 1319: 1318: 1313: 1311: 1310: 1289: 1280: 1271: 1263: 1262: 1251:Basic properties 1114: 1112: 1111: 1106: 1090: 1088: 1087: 1082: 1066: 1064: 1063: 1058: 1044: 1042: 1041: 1036: 1024: 1022: 1021: 1016: 999: 997: 996: 991: 979: 977: 976: 971: 959: 957: 956: 951: 939: 937: 936: 931: 901: 899: 898: 893: 891: 890: 878: 877: 861: 859: 858: 853: 851: 850: 830: 828: 827: 822: 810: 808: 807: 802: 790: 788: 787: 782: 770: 768: 767: 762: 750: 748: 747: 742: 730: 728: 727: 722: 710: 708: 707: 702: 683: 681: 680: 675: 663: 661: 660: 655: 639: 637: 636: 631: 615: 613: 612: 607: 595: 593: 592: 587: 585: 584: 568: 566: 565: 560: 548: 546: 545: 540: 522: 520: 519: 514: 471:Formal treatment 416:identity element 409: 407: 406: 401: 399: 398: 379: 375: 371: 362: 352: 342: 335: 334: 322: 312: 302: 295: 294: 275: 268: 267: 251: 241: 234: 233: 217: 207: 200: 199: 183: 177: 116: 107: 105: 104: 99: 97: 96: 78: 62: 60: 59: 54: 52: 51: 21: 8847: 8846: 8842: 8841: 8840: 8838: 8837: 8836: 8807: 8806: 8805: 8800: 8768: 8672: 8638:Conway notation 8622: 8616: 8603:Tricolorability 8451: 8445: 8442: 8441: 8440: 8430: 8427: 8426: 8425: 8415: 8412: 8411: 8410: 8402: 8392: 8382: 8372: 8353: 8332:Composite knots 8318: 8307: 8304: 8303: 8302: 8299:Borromean rings 8292: 8289: 8288: 8287: 8261: 8251: 8241: 8231: 8223: 8215: 8205: 8195: 8176: 8162: 8132: 8127: 8081: 8055: 8050: 7967: 7965: 7910: 7907: 7902: 7897: 7885:, eds. (2005), 7872: 7765:Deligne, Pierre 7683:math.GT/0409205 7660: 7658:Further reading 7655: 7631: 7622: 7618: 7579:Fuks, Dmitry B. 7576: 7572: 7565: 7536: 7532: 7434: 7430: 7336: 7329: 7324:Nayak, Chetan; 7322: 7318: 7301: 7297: 7257: 7253: 7238:10.2307/1969218 7217: 7210: 7203: 7177:Magnus, Wilhelm 7174: 7170: 7160: 7158: 7153:(August 2014). 7148: 7144: 7130: 7110:Birman, Joan S. 7107: 7103: 7065:(1–2): 95–122, 7049: 7045: 7023: 7019: 6969: 6965: 6901: 6897: 6892:on 26 July 2011 6889: 6842: 6836: 6832: 6791: 6787: 6772: 6768: 6764: 6722: 6688: 6684: 6672: 6668: 6653: 6649: 6637: 6633: 6618: 6614: 6602: 6598: 6596: 6593: 6592: 6546: 6542: 6540: 6537: 6536: 6515: 6511: 6509: 6506: 6505: 6502:Vladimir Arnold 6484: 6479: 6478: 6476: 6473: 6472: 6464: 6442: 6437: 6436: 6424: 6420: 6418: 6415: 6414: 6397: 6393: 6391: 6388: 6387: 6368: 6360: 6355: 6353: 6350: 6349: 6320: 6315: 6314: 6302: 6298: 6289: 6285: 6264: 6260: 6245: 6241: 6229: 6225: 6216: 6212: 6210: 6207: 6206: 6173: for  6171: 6165: 6161: 6152: 6148: 6139: 6134: 6133: 6124: 6120: 6108: 6104: 6083: 6079: 6061: 6056: 6055: 6043: 6039: 6037: 6034: 6033: 6014: 6011: 6010: 5993: 5988: 5987: 5985: 5982: 5981: 5975: 5956: 5952: 5950: 5947: 5946: 5930: 5927: 5926: 5891: 5888: 5887: 5864: 5861: 5860: 5854: 5848: 5812: 5806: 5802: 5793: 5789: 5779: 5772: 5768: 5762: 5758: 5750: 5747: 5746: 5718: 5714: 5712: 5709: 5708: 5676: 5662: 5659: 5658: 5630: 5616: 5613: 5612: 5590: 5576: 5573: 5572: 5527: 5523: 5521: 5518: 5517: 5495: 5492: 5491: 5474: 5470: 5468: 5465: 5464: 5442: 5439: 5438: 5415: 5411: 5402: 5398: 5390: 5387: 5386: 5379: 5371:complex numbers 5349: 5345: 5343: 5340: 5339: 5333: 5327: 5308: 5288: 5285: 5284: 5277:Stephen Bigelow 5268: 5245: 5225: 5220: 5217: 5215:Representations 5209:knot invariants 5190: 5186: 5181: 5175: 5172: 5163: 5155: 5150: 5147: 5138: 5134: 5129: 5101: 5097: 5076: 5072: 5057: 5053: 5047: 5043: 5034: 5023: 5004: 5000: 4985: 4981: 4966: 4962: 4961: 4957: 4943: 4939: 4918: 4914: 4905: 4901: 4886: 4882: 4867: 4863: 4862: 4858: 4852: 4848: 4846: 4843: 4842: 4833: 4826: 4821: 4815: 4805: 4799: 4793: 4787: 4777: 4771: 4768: 4744: 4739: 4732: 4725: 4721: 4717: 4712: 4701: 4693: 4687: 4659: 4640: 4628: 4623: 4620: 4609: 4600: 4594: 4591: 4585: 4574: 4568: 4562: 4556: 4550: 4544: 4520: 4519: 4514: 4505: 4504: 4499: 4489: 4488: 4471: 4470: 4465: 4456: 4455: 4450: 4440: 4439: 4431: 4428: 4427: 4395: 4391: 4382: 4378: 4372: 4357: 4354: 4353: 4333: 4327: 4306: 4305: 4300: 4291: 4290: 4285: 4275: 4274: 4262: 4258: 4246: 4242: 4234: 4233: 4228: 4222: 4221: 4216: 4206: 4205: 4187: 4183: 4181: 4178: 4177: 4168: 4164: 4158: 4154: 4139: 4133: 4126: 4120: 4114:normal subgroup 4109: 4095: 4089: 4069: 4065: 4063: 4060: 4059: 4039: 4036: 4035: 4018: 4014: 4012: 4009: 4008: 3992: 3989: 3988: 3959: 3954: 3941: 3937: 3925: 3920: 3907: 3903: 3901: 3898: 3897: 3878: 3875: 3874: 3857: 3853: 3844: 3840: 3838: 3835: 3834: 3813: 3809: 3803: 3799: 3783: 3779: 3773: 3769: 3763: 3759: 3751: 3748: 3747: 3720: 3716: 3714: 3711: 3710: 3683: 3679: 3671: 3668: 3667: 3646: 3642: 3640: 3637: 3636: 3609: 3589: 3572: 3555: 3554: 3552: 3550: 3547: 3546: 3524: 3504: 3502: 3499: 3498: 3474: 3470: 3468: 3465: 3464: 3439: 3435: 3433: 3430: 3429: 3423: 3420: 3378: 3374: 3365: 3361: 3346: 3342: 3334: 3331: 3330: 3318: 3314: 3309: 3301: 3295: 3290: 3286: 3279: 3274: 3236: 3231: 3213: 3199: 3196: for  3194: 3188: 3184: 3178: 3174: 3165: 3161: 3155: 3151: 3136: 3132: 3126: 3122: 3110: 3106: 3097: 3093: 3081: 3077: 3071: 3067: 3062: 3050: 3046: 3031: 3027: 3026: 3022: 3013: 3009: 3007: 3004: 3003: 2992: 2978: 2970: 2966: 2961: 2959: 2952:symmetric group 2947: 2940: 2935: 2923: 2913: 2910: 2905: 2877: 2874: 2873: 2870: 2864: 2860: 2854: 2846: 2843: 2839: 2835: 2831: 2827: 2823: 2819: 2813: 2797: 2788: 2784: 2782: 2779: 2778: 2751: 2747: 2745: 2742: 2741: 2719: 2716: 2715: 2691: 2687: 2685: 2682: 2681: 2653: 2649: 2647: 2644: 2643: 2622: 2618: 2616: 2613: 2612: 2592: 2588: 2586: 2583: 2582: 2557: 2554: 2553: 2547: 2524: 2520: 2518: 2515: 2514: 2486: 2483: 2482: 2461: 2457: 2455: 2452: 2451: 2445: 2413: 2409: 2407: 2404: 2403: 2387: 2385: 2382: 2381: 2361: 2357: 2355: 2352: 2351: 2330: 2326: 2324: 2321: 2320: 2316: 2304:braid relations 2277: 2263: 2261: 2258: 2257: 2223: 2220: 2219: 2191: 2187: 2181: 2177: 2168: 2164: 2158: 2154: 2139: 2135: 2129: 2125: 2113: 2109: 2100: 2096: 2084: 2080: 2074: 2070: 2055: 2051: 2036: 2032: 2031: 2027: 2018: 2014: 2012: 2009: 2008: 1984: 1980: 1978: 1975: 1974: 1958: 1955: 1954: 1934: 1930: 1928: 1925: 1924: 1907: 1903: 1901: 1898: 1897: 1880: 1876: 1874: 1871: 1870: 1848: 1844: 1838: 1834: 1828: 1824: 1815: 1811: 1805: 1801: 1795: 1791: 1789: 1786: 1785: 1765: 1761: 1755: 1751: 1745: 1741: 1732: 1728: 1722: 1718: 1712: 1708: 1706: 1703: 1702: 1673: 1669: 1663: 1659: 1650: 1646: 1640: 1636: 1634: 1631: 1630: 1605: 1602: 1601: 1579: 1576: 1575: 1559: 1556: 1555: 1535: 1530: 1524: 1521: 1520: 1503: 1499: 1497: 1494: 1493: 1471: 1468: 1467: 1451: 1448: 1447: 1430: 1426: 1424: 1421: 1420: 1399: 1395: 1393: 1390: 1389: 1388:Every braid in 1382: 1366: 1362: 1360: 1357: 1356: 1352: 1336: 1332: 1330: 1327: 1326: 1322: 1306: 1302: 1300: 1297: 1296: 1258: 1253: 1199: 1191:Seifert circles 1187: 1147:J. W. Alexander 1127: 1121: 1100: 1097: 1096: 1093:homotopy groups 1076: 1073: 1072: 1052: 1049: 1048: 1030: 1027: 1026: 1010: 1007: 1006: 985: 982: 981: 965: 962: 961: 945: 942: 941: 907: 904: 903: 886: 882: 873: 869: 867: 864: 863: 846: 842: 840: 837: 836: 816: 813: 812: 796: 793: 792: 776: 773: 772: 756: 753: 752: 736: 733: 732: 716: 713: 712: 696: 693: 692: 669: 666: 665: 649: 646: 645: 642:symmetric group 625: 622: 621: 601: 598: 597: 580: 576: 574: 571: 570: 554: 551: 550: 534: 531: 530: 508: 505: 504: 479: 473: 453:quantum physics 433:fluid mechanics 429: 414:operation. The 394: 390: 388: 385: 384: 377: 373: 369: 179: 172: 169: 125:group operation 121:ambient isotopy 114: 92: 88: 86: 83: 82: 74: 73:braid group on 47: 43: 41: 38: 37: 28: 23: 22: 15: 12: 11: 5: 8845: 8835: 8834: 8829: 8824: 8819: 8802: 8801: 8799: 8798: 8786: 8773: 8770: 8769: 8767: 8766: 8764:Surgery theory 8761: 8756: 8751: 8746: 8741: 8736: 8731: 8726: 8721: 8716: 8711: 8706: 8701: 8696: 8691: 8686: 8680: 8678: 8674: 8673: 8671: 8670: 8665: 8663:Skein relation 8660: 8655: 8650: 8645: 8640: 8635: 8629: 8627: 8618: 8617: 8615: 8614: 8608:Unknotting no. 8605: 8600: 8595: 8594: 8593: 8583: 8578: 8577: 8576: 8571: 8566: 8561: 8556: 8546: 8541: 8536: 8531: 8526: 8521: 8516: 8511: 8506: 8501: 8500: 8499: 8489: 8484: 8483: 8482: 8472: 8467: 8461: 8459: 8453: 8452: 8450: 8449: 8443: 8434: 8428: 8419: 8413: 8404: 8400: 8394: 8390: 8384: 8380: 8374: 8370: 8363: 8361: 8355: 8354: 8352: 8351: 8346: 8345: 8344: 8339: 8328: 8326: 8320: 8319: 8317: 8316: 8311: 8305: 8296: 8290: 8281: 8275: 8269: 8263: 8259: 8253: 8249: 8243: 8239: 8233: 8229: 8225: 8221: 8217: 8213: 8207: 8203: 8197: 8193: 8186: 8184: 8178: 8177: 8161: 8160: 8153: 8146: 8138: 8129: 8128: 8126: 8125: 8120: 8115: 8110: 8105: 8100: 8095: 8089: 8087: 8083: 8082: 8080: 8079: 8074: 8069: 8063: 8061: 8057: 8056: 8049: 8048: 8041: 8034: 8026: 8020: 8019: 8011:Dance Your PhD 8000: 7989: 7974: 7964:on 4 June 2013 7950: 7935: 7922: 7906: 7905:External links 7903: 7901: 7900: 7895: 7875: 7870: 7851: 7818: 7777:(4): 273–302, 7761: 7748:"Braid theory" 7743: 7708:(1): 159–192, 7691: 7661: 7659: 7656: 7654: 7653: 7616: 7589:(2): 143–151. 7570: 7563: 7539:Ghrist, Robert 7530: 7528: 7527: 7481: 7446:(8): 979–991, 7428: 7399:hep-th/0201240 7392:(2): 558–563, 7347:(3): 529–553, 7326:Wilczek, Frank 7316: 7295: 7251: 7232:(1): 101–126. 7208: 7201: 7168: 7142: 7128: 7101: 7043: 7026:Markov, Andrey 7017: 6979:(11): 114101, 6963: 6895: 6853:(1): 277–304, 6830: 6801:(2): 285–315. 6785: 6765: 6763: 6760: 6759: 6758: 6753: 6748: 6743: 6738: 6733: 6728: 6721: 6718: 6717: 6716: 6705: 6702: 6697: 6694: 6691: 6687: 6681: 6678: 6675: 6671: 6667: 6662: 6659: 6656: 6652: 6646: 6643: 6640: 6636: 6632: 6627: 6624: 6621: 6617: 6611: 6608: 6605: 6601: 6577: 6574: 6571: 6568: 6565: 6562: 6559: 6552: 6549: 6545: 6518: 6514: 6487: 6482: 6462: 6450: 6445: 6440: 6435: 6432: 6427: 6423: 6400: 6396: 6371: 6367: 6363: 6358: 6346: 6345: 6334: 6331: 6328: 6323: 6318: 6313: 6310: 6305: 6301: 6297: 6292: 6288: 6284: 6281: 6278: 6275: 6272: 6267: 6263: 6259: 6256: 6253: 6248: 6244: 6240: 6237: 6232: 6228: 6224: 6219: 6215: 6200: 6199: 6187: 6184: 6181: 6178: 6168: 6164: 6160: 6155: 6151: 6147: 6142: 6137: 6132: 6127: 6123: 6119: 6116: 6111: 6107: 6103: 6100: 6097: 6094: 6091: 6086: 6082: 6078: 6075: 6072: 6069: 6064: 6059: 6054: 6051: 6046: 6042: 6018: 5996: 5991: 5973: 5959: 5955: 5934: 5910: 5907: 5904: 5901: 5898: 5895: 5868: 5847: 5844: 5843: 5842: 5831: 5828: 5825: 5822: 5819: 5809: 5805: 5801: 5796: 5792: 5788: 5782: 5778: 5775: 5771: 5765: 5761: 5757: 5754: 5742:minus the set 5721: 5717: 5692: 5689: 5686: 5683: 5679: 5675: 5672: 5669: 5666: 5657:to the points 5646: 5643: 5640: 5637: 5633: 5629: 5626: 5623: 5620: 5600: 5597: 5593: 5589: 5586: 5583: 5580: 5536: 5533: 5530: 5526: 5516:generators of 5505: 5502: 5499: 5477: 5473: 5463:generators of 5452: 5449: 5446: 5424: 5421: 5418: 5414: 5410: 5405: 5401: 5397: 5394: 5378: 5375: 5352: 5348: 5315: 5311: 5307: 5304: 5301: 5298: 5295: 5292: 5275:. Around 2001 5249: ≥ 5 5230:representation 5223: 5216: 5213: 5184: 5167: 5153: 5142: 5132: 5126: 5125: 5114: 5110: 5104: 5100: 5096: 5093: 5090: 5085: 5082: 5079: 5075: 5071: 5066: 5063: 5060: 5056: 5050: 5046: 5040: 5037: 5032: 5029: 5026: 5022: 5018: 5013: 5010: 5007: 5003: 4999: 4994: 4991: 4988: 4984: 4980: 4977: 4974: 4969: 4965: 4960: 4956: 4952: 4946: 4942: 4938: 4935: 4932: 4927: 4924: 4921: 4917: 4913: 4908: 4904: 4900: 4895: 4892: 4889: 4885: 4881: 4878: 4875: 4870: 4866: 4861: 4855: 4851: 4824: 4784:tensor product 4767: 4764: 4742: 4727: 4723: 4715: 4700: 4697: 4689: 4658: 4655: 4637:punctured disk 4626: 4619: 4616: 4589: 4584:The center of 4572: 4541: 4540: 4529: 4524: 4518: 4515: 4513: 4510: 4507: 4506: 4503: 4500: 4498: 4495: 4494: 4492: 4487: 4484: 4480: 4475: 4469: 4466: 4464: 4461: 4458: 4457: 4454: 4451: 4449: 4446: 4445: 4443: 4438: 4435: 4421: 4420: 4409: 4406: 4403: 4398: 4394: 4390: 4385: 4381: 4375: 4370: 4367: 4364: 4361: 4324: 4323: 4310: 4304: 4301: 4299: 4296: 4293: 4292: 4289: 4286: 4284: 4281: 4280: 4278: 4273: 4268: 4265: 4261: 4257: 4254: 4249: 4245: 4238: 4232: 4229: 4227: 4224: 4223: 4220: 4217: 4215: 4212: 4211: 4209: 4204: 4201: 4198: 4195: 4190: 4186: 4166: 4156: 4137: 4124: 4118:quotient group 4107: 4072: 4068: 4043: 4021: 4017: 3996: 3987:implying that 3985: 3984: 3973: 3970: 3965: 3962: 3957: 3953: 3949: 3944: 3940: 3936: 3931: 3928: 3923: 3919: 3915: 3910: 3906: 3882: 3860: 3856: 3852: 3847: 3843: 3831: 3830: 3816: 3812: 3806: 3802: 3798: 3795: 3791: 3786: 3782: 3776: 3772: 3766: 3762: 3758: 3755: 3723: 3719: 3694: 3691: 3686: 3682: 3678: 3675: 3649: 3645: 3633:quotient group 3629: 3628: 3616: 3612: 3608: 3605: 3602: 3598: 3595: 3592: 3588: 3583: 3579: 3575: 3571: 3568: 3565: 3561: 3558: 3531: 3527: 3523: 3520: 3517: 3513: 3510: 3507: 3477: 3473: 3442: 3438: 3422: 3418: 3415: 3407: 3406: 3395: 3392: 3387: 3384: 3381: 3377: 3373: 3368: 3364: 3360: 3355: 3352: 3349: 3345: 3341: 3338: 3312: 3293: 3284: 3277: 3267: 3266: 3255: 3251: 3247: 3244: 3239: 3234: 3230: 3226: 3223: 3220: 3216: 3212: 3209: 3206: 3202: 3191: 3187: 3181: 3177: 3173: 3168: 3164: 3158: 3154: 3150: 3145: 3142: 3139: 3135: 3129: 3125: 3119: 3116: 3113: 3109: 3105: 3100: 3096: 3090: 3087: 3084: 3080: 3074: 3070: 3065: 3059: 3056: 3053: 3049: 3045: 3042: 3039: 3034: 3030: 3025: 3021: 3016: 3012: 2990: 2974: 2964: 2955: 2945: 2938: 2909: 2906: 2904: 2901: 2900: 2899: 2887: 2884: 2881: 2866: 2856: 2851:abelianization 2841: 2837: 2833: 2829: 2825: 2815: 2800: 2796: 2791: 2787: 2772: 2754: 2750: 2729: 2726: 2723: 2712: 2709:Dehornoy order 2694: 2690: 2674: 2656: 2652: 2638:have infinite 2625: 2621: 2609: 2595: 2591: 2567: 2564: 2561: 2533: 2530: 2527: 2523: 2502: 2499: 2496: 2493: 2490: 2464: 2460: 2442: 2416: 2412: 2390: 2364: 2360: 2333: 2329: 2315: 2312: 2287: 2284: 2280: 2276: 2273: 2270: 2266: 2245: 2242: 2239: 2236: 2233: 2230: 2227: 2216: 2215: 2204: 2200: 2194: 2190: 2184: 2180: 2176: 2171: 2167: 2161: 2157: 2153: 2148: 2145: 2142: 2138: 2132: 2128: 2122: 2119: 2116: 2112: 2108: 2103: 2099: 2093: 2090: 2087: 2083: 2077: 2073: 2069: 2064: 2061: 2058: 2054: 2050: 2047: 2044: 2039: 2035: 2030: 2026: 2021: 2017: 1987: 1983: 1962: 1937: 1933: 1910: 1906: 1883: 1879: 1867: 1866: 1865: 1864: 1851: 1847: 1841: 1837: 1831: 1827: 1823: 1818: 1814: 1808: 1804: 1798: 1794: 1782: 1768: 1764: 1758: 1754: 1748: 1744: 1740: 1735: 1731: 1725: 1721: 1715: 1711: 1693: 1692: 1691: 1690: 1676: 1672: 1666: 1662: 1658: 1653: 1649: 1643: 1639: 1609: 1589: 1586: 1583: 1563: 1541: 1538: 1533: 1529: 1506: 1502: 1481: 1478: 1475: 1455: 1433: 1429: 1402: 1398: 1384: 1383: 1369: 1365: 1355: 1353: 1339: 1335: 1325: 1323: 1309: 1305: 1295: 1292: 1291: 1282: 1273: 1257: 1254: 1252: 1249: 1207:Wilhelm Magnus 1198: 1195: 1186: 1183: 1179:Markov theorem 1125:Brunnian braid 1120: 1117: 1104: 1080: 1056: 1034: 1014: 989: 969: 949: 929: 926: 923: 920: 917: 914: 911: 889: 885: 881: 876: 872: 849: 845: 820: 800: 780: 760: 740: 720: 700: 691:A path in the 673: 653: 629: 605: 583: 579: 558: 538: 512: 475:Main article: 472: 469: 437:chaotic mixing 428: 425: 397: 393: 376:is written as 364: 363: 356: 353: 346: 343: 333: 332: 324: 323: 316: 313: 306: 303: 293: 292: 280: 279: 276: 266: 265: 253: 252: 245: 242: 232: 231: 219: 218: 211: 208: 198: 197: 168: 165: 159:invariants of 95: 91: 50: 46: 26: 9: 6: 4: 3: 2: 8844: 8833: 8830: 8828: 8825: 8823: 8820: 8818: 8815: 8814: 8812: 8797: 8796: 8787: 8785: 8784: 8775: 8774: 8771: 8765: 8762: 8760: 8757: 8755: 8752: 8750: 8747: 8745: 8742: 8740: 8737: 8735: 8732: 8730: 8727: 8725: 8722: 8720: 8717: 8715: 8712: 8710: 8707: 8705: 8702: 8700: 8699:Conway sphere 8697: 8695: 8692: 8690: 8687: 8685: 8682: 8681: 8679: 8675: 8669: 8666: 8664: 8661: 8659: 8656: 8654: 8651: 8649: 8646: 8644: 8641: 8639: 8636: 8634: 8631: 8630: 8628: 8626: 8619: 8613: 8609: 8606: 8604: 8601: 8599: 8596: 8592: 8589: 8588: 8587: 8584: 8582: 8579: 8575: 8572: 8570: 8567: 8565: 8562: 8560: 8557: 8555: 8552: 8551: 8550: 8547: 8545: 8542: 8540: 8537: 8535: 8532: 8530: 8527: 8525: 8522: 8520: 8517: 8515: 8512: 8510: 8507: 8505: 8502: 8498: 8495: 8494: 8493: 8490: 8488: 8485: 8481: 8478: 8477: 8476: 8473: 8471: 8470:Arf invariant 8468: 8466: 8463: 8462: 8460: 8458: 8454: 8438: 8435: 8423: 8420: 8408: 8405: 8398: 8395: 8388: 8385: 8378: 8375: 8368: 8365: 8364: 8362: 8360: 8356: 8350: 8347: 8343: 8340: 8338: 8335: 8334: 8333: 8330: 8329: 8327: 8325: 8321: 8315: 8312: 8300: 8297: 8285: 8282: 8279: 8276: 8273: 8270: 8267: 8264: 8257: 8254: 8247: 8244: 8237: 8234: 8232: 8226: 8224: 8218: 8211: 8208: 8201: 8198: 8191: 8188: 8187: 8185: 8183: 8179: 8174: 8170: 8166: 8159: 8154: 8152: 8147: 8145: 8140: 8139: 8136: 8124: 8121: 8119: 8116: 8114: 8113:3D composites 8111: 8109: 8106: 8104: 8101: 8099: 8096: 8094: 8091: 8090: 8088: 8084: 8078: 8077:Brunnian link 8075: 8073: 8070: 8068: 8065: 8064: 8062: 8058: 8054: 8047: 8042: 8040: 8035: 8033: 8028: 8027: 8024: 8018: 8012: 8008: 8007: 8001: 7997: 7996: 7990: 7986: 7982: 7981: 7975: 7963: 7959: 7955: 7951: 7947: 7943: 7942: 7938:Macauley, M. 7936: 7934: 7930: 7926: 7923: 7919: 7918: 7913: 7912:"Braid group" 7909: 7908: 7898: 7892: 7888: 7884: 7880: 7876: 7873: 7867: 7863: 7862: 7857: 7852: 7849: 7845: 7840: 7835: 7831: 7827: 7823: 7819: 7816: 7812: 7808: 7804: 7800: 7796: 7792: 7788: 7784: 7780: 7776: 7772: 7771: 7766: 7762: 7759: 7755: 7754: 7749: 7744: 7741: 7737: 7733: 7729: 7725: 7721: 7716: 7711: 7707: 7703: 7702: 7697: 7692: 7690: 7684: 7679: 7675: 7671: 7667: 7663: 7662: 7649: 7645: 7641: 7637: 7630: 7626: 7620: 7612: 7608: 7604: 7600: 7596: 7592: 7588: 7584: 7580: 7574: 7566: 7564:9789814291408 7560: 7556: 7552: 7548: 7544: 7540: 7534: 7525: 7521: 7517: 7513: 7509: 7505: 7500: 7495: 7491: 7487: 7482: 7479: 7475: 7471: 7467: 7463: 7459: 7454: 7449: 7445: 7441: 7436: 7435: 7432: 7425: 7421: 7417: 7413: 7409: 7405: 7400: 7395: 7391: 7387: 7380: 7376: 7372: 7368: 7364: 7360: 7355: 7350: 7346: 7342: 7333: 7327: 7320: 7311: 7306: 7299: 7291: 7287: 7282: 7277: 7273: 7269: 7265: 7261: 7255: 7247: 7243: 7239: 7235: 7231: 7227: 7226: 7221: 7215: 7213: 7204: 7198: 7194: 7190: 7186: 7182: 7178: 7172: 7156: 7155:"Braid Index" 7152: 7146: 7139: 7135: 7131: 7125: 7121: 7117: 7116: 7111: 7105: 7098: 7094: 7090: 7086: 7082: 7078: 7073: 7068: 7064: 7060: 7059: 7054: 7047: 7039: 7035: 7031: 7027: 7021: 7014: 7010: 7005: 7000: 6995: 6990: 6986: 6982: 6978: 6974: 6967: 6960: 6956: 6952: 6948: 6944: 6940: 6936: 6932: 6928: 6924: 6919: 6914: 6911:(3): 036311, 6910: 6906: 6899: 6888: 6884: 6880: 6876: 6872: 6868: 6864: 6860: 6856: 6852: 6848: 6841: 6834: 6826: 6822: 6818: 6814: 6809: 6804: 6800: 6796: 6789: 6781: 6777: 6776:"Braid Group" 6770: 6766: 6757: 6754: 6752: 6749: 6747: 6744: 6742: 6739: 6737: 6734: 6732: 6729: 6727: 6724: 6723: 6703: 6700: 6695: 6692: 6689: 6685: 6679: 6676: 6673: 6669: 6665: 6660: 6657: 6654: 6650: 6644: 6641: 6638: 6634: 6630: 6625: 6622: 6619: 6615: 6609: 6606: 6603: 6599: 6591: 6590: 6589: 6575: 6572: 6569: 6566: 6563: 6560: 6557: 6550: 6547: 6543: 6534: 6516: 6512: 6503: 6485: 6470: 6467: 6443: 6430: 6425: 6421: 6398: 6394: 6384: 6365: 6361: 6332: 6321: 6308: 6303: 6299: 6290: 6286: 6282: 6273: 6270: 6265: 6261: 6254: 6246: 6242: 6238: 6230: 6226: 6217: 6213: 6205: 6204: 6203: 6182: 6179: 6176: 6166: 6162: 6158: 6153: 6149: 6145: 6140: 6130: 6125: 6121: 6117: 6109: 6105: 6101: 6098: 6095: 6092: 6089: 6084: 6080: 6070: 6062: 6049: 6044: 6040: 6032: 6031: 6030: 6016: 5994: 5979: 5957: 5953: 5932: 5924: 5921:, which is a 5905: 5902: 5899: 5893: 5885: 5882: 5866: 5859: 5853: 5829: 5823: 5820: 5817: 5807: 5803: 5799: 5794: 5790: 5786: 5776: 5773: 5763: 5759: 5745: 5744: 5743: 5741: 5737: 5719: 5715: 5706: 5705:inverse limit 5687: 5684: 5681: 5677: 5673: 5670: 5667: 5641: 5638: 5635: 5631: 5627: 5624: 5621: 5595: 5591: 5587: 5584: 5581: 5569: 5567: 5563: 5559: 5555: 5550: 5534: 5531: 5528: 5524: 5503: 5500: 5497: 5490:to the first 5475: 5471: 5450: 5447: 5444: 5422: 5419: 5416: 5412: 5403: 5399: 5395: 5392: 5384: 5374: 5372: 5368: 5350: 5346: 5336: 5330: 5313: 5309: 5302: 5299: 5296: 5290: 5283:of dimension 5282: 5278: 5274: 5266: 5265:Frank Wilczek 5262: 5258: 5257:Ruth Lawrence 5254: 5248: 5243: 5239: 5235: 5231: 5226: 5212: 5210: 5206: 5202: 5198: 5193: 5187: 5178: 5170: 5166: 5161: 5156: 5145: 5141: 5135: 5112: 5108: 5102: 5098: 5094: 5091: 5088: 5083: 5080: 5077: 5073: 5069: 5064: 5061: 5058: 5054: 5048: 5044: 5038: 5035: 5030: 5027: 5024: 5020: 5016: 5011: 5008: 5005: 5001: 4997: 4992: 4989: 4986: 4982: 4978: 4975: 4972: 4967: 4963: 4958: 4954: 4950: 4944: 4940: 4936: 4933: 4930: 4925: 4922: 4919: 4915: 4911: 4906: 4902: 4898: 4893: 4890: 4887: 4883: 4879: 4876: 4873: 4868: 4864: 4859: 4853: 4849: 4841: 4840: 4839: 4836: 4831: 4827: 4818: 4813: 4808: 4802: 4796: 4790: 4785: 4780: 4774: 4763: 4761: 4756: 4754: 4750: 4745: 4737: 4730: 4718: 4710: 4706: 4696: 4692: 4685: 4681: 4677: 4673: 4669: 4665: 4654: 4652: 4647: 4643: 4638: 4634: 4629: 4615: 4612: 4608: 4603: 4597: 4588: 4582: 4578: 4571: 4565: 4559: 4553: 4547: 4527: 4522: 4516: 4511: 4508: 4501: 4496: 4490: 4485: 4482: 4478: 4473: 4467: 4462: 4459: 4452: 4447: 4441: 4436: 4433: 4426: 4425: 4424: 4404: 4401: 4396: 4392: 4388: 4383: 4379: 4368: 4365: 4362: 4352: 4351: 4350: 4348: 4343: 4341: 4336: 4330: 4308: 4302: 4297: 4294: 4287: 4282: 4276: 4271: 4266: 4263: 4259: 4252: 4247: 4243: 4236: 4230: 4225: 4218: 4213: 4207: 4202: 4199: 4193: 4188: 4184: 4176: 4175: 4174: 4171: 4161: 4153: 4147: 4143: 4136: 4130: 4123: 4119: 4115: 4106: 4102: 4099: ⊂  4098: 4092: 4087: 4070: 4066: 4057: 4041: 4019: 4015: 3994: 3971: 3968: 3963: 3960: 3955: 3951: 3947: 3942: 3938: 3934: 3929: 3926: 3921: 3917: 3913: 3908: 3904: 3896: 3895: 3894: 3880: 3858: 3854: 3850: 3845: 3841: 3814: 3810: 3804: 3800: 3796: 3793: 3789: 3784: 3780: 3774: 3770: 3764: 3760: 3756: 3753: 3746: 3745: 3744: 3742: 3737: 3721: 3717: 3708: 3692: 3684: 3680: 3673: 3665: 3647: 3643: 3634: 3606: 3603: 3569: 3566: 3545: 3544: 3543: 3521: 3518: 3497: 3496:modular group 3493: 3475: 3471: 3458: 3440: 3436: 3427: 3414: 3412: 3393: 3385: 3382: 3379: 3375: 3366: 3362: 3353: 3350: 3347: 3343: 3336: 3329: 3328: 3327: 3326: 3321: 3315: 3307: 3304: 3296: 3287: 3280: 3272: 3253: 3249: 3245: 3242: 3237: 3232: 3228: 3224: 3221: 3218: 3210: 3207: 3204: 3189: 3185: 3179: 3175: 3171: 3166: 3162: 3156: 3152: 3148: 3143: 3140: 3137: 3133: 3127: 3123: 3117: 3114: 3111: 3107: 3103: 3098: 3094: 3088: 3085: 3082: 3078: 3072: 3068: 3057: 3054: 3051: 3047: 3043: 3040: 3037: 3032: 3028: 3023: 3019: 3014: 3010: 3002: 3001: 3000: 2998: 2993: 2986: 2982: 2977: 2973: 2967: 2958: 2953: 2948: 2941: 2934: 2931: 2926: 2921: 2916: 2885: 2882: 2879: 2869: 2859: 2852: 2845:is mapped to 2818: 2789: 2785: 2777: 2773: 2770: 2752: 2748: 2727: 2724: 2721: 2713: 2710: 2692: 2688: 2679: 2675: 2672: 2654: 2650: 2641: 2623: 2619: 2610: 2589: 2581: 2565: 2562: 2559: 2550: 2531: 2528: 2525: 2521: 2497: 2494: 2491: 2480: 2462: 2458: 2448: 2443: 2440: 2436: 2432: 2414: 2410: 2380: 2362: 2358: 2349: 2331: 2327: 2318: 2317: 2311: 2309: 2305: 2301: 2285: 2282: 2274: 2271: 2268: 2243: 2240: 2237: 2234: 2231: 2228: 2225: 2202: 2198: 2192: 2188: 2182: 2178: 2174: 2169: 2165: 2159: 2155: 2151: 2146: 2143: 2140: 2136: 2130: 2126: 2120: 2117: 2114: 2110: 2106: 2101: 2097: 2091: 2088: 2085: 2081: 2075: 2071: 2067: 2062: 2059: 2056: 2052: 2048: 2045: 2042: 2037: 2033: 2028: 2024: 2019: 2015: 2007: 2006: 2005: 2003: 1985: 1981: 1960: 1951: 1935: 1931: 1908: 1904: 1881: 1877: 1849: 1845: 1839: 1835: 1829: 1825: 1821: 1816: 1812: 1806: 1802: 1796: 1792: 1783: 1766: 1762: 1756: 1752: 1746: 1742: 1738: 1733: 1729: 1723: 1719: 1713: 1709: 1700: 1699: 1698: 1697: 1696: 1674: 1670: 1664: 1660: 1656: 1651: 1647: 1641: 1637: 1628: 1627: 1626: 1625: 1624: 1621: 1607: 1587: 1584: 1581: 1561: 1539: 1536: 1531: 1527: 1504: 1500: 1479: 1476: 1473: 1453: 1431: 1427: 1418: 1400: 1396: 1367: 1363: 1354: 1337: 1333: 1324: 1307: 1303: 1294: 1293: 1288: 1283: 1279: 1274: 1270: 1265: 1264: 1261: 1248: 1246: 1242: 1237: 1235: 1231: 1227: 1223: 1222:presentations 1218: 1216: 1212: 1211:Adolf Hurwitz 1208: 1204: 1194: 1192: 1182: 1180: 1175: 1173: 1169: 1168:Vaughan Jones 1165: 1163: 1159: 1154: 1152: 1148: 1144: 1140: 1136: 1132: 1126: 1119:Closed braids 1116: 1115:are trivial. 1102: 1094: 1078: 1070: 1054: 1046: 1032: 1012: 1001: 987: 967: 947: 927: 924: 921: 918: 915: 912: 909: 887: 883: 879: 874: 870: 847: 843: 834: 818: 798: 778: 758: 738: 718: 698: 689: 687: 671: 651: 643: 627: 619: 603: 581: 577: 556: 536: 528: 527: 510: 503: 498: 496: 492: 488: 484: 478: 468: 466: 462: 458: 454: 449: 447: 443: 438: 434: 424: 421: 417: 413: 395: 391: 381: 361: 357: 354: 351: 347: 344: 341: 337: 336: 331: 330: 329: 321: 317: 314: 311: 307: 304: 301: 297: 296: 291: 290: 289: 287: 277: 274: 270: 269: 264: 263: 262: 260: 250: 246: 243: 240: 236: 235: 230: 229: 228: 226: 216: 212: 209: 206: 202: 201: 196: 195: 194: 192: 188: 182: 175: 164: 162: 158: 154: 150: 146: 142: 138: 134: 130: 126: 123:), and whose 122: 118: 111: 93: 89: 80: 77: 70: 48: 44: 34: 30: 19: 8817:Braid groups 8793: 8781: 8709:Double torus 8694:Braid theory 8509:Crossing no. 8504:Crosscap no. 8190:Figure-eight 8103:Braided rope 8072:Braid theory 8066: 8010: 8005: 7994: 7985:the original 7979: 7966:. Retrieved 7962:the original 7945: 7940: 7915: 7889:, Elsevier, 7886: 7864:, Springer, 7861:Braid Groups 7860: 7829: 7825: 7774: 7768: 7751: 7705: 7699: 7673: 7666:Birman, Joan 7639: 7636:Mat. Zametki 7635: 7619: 7586: 7582: 7573: 7542: 7533: 7499:math/0303042 7492:(1): 21–29, 7489: 7485: 7453:math/0201303 7443: 7439: 7431: 7389: 7385: 7344: 7340: 7331: 7319: 7298: 7271: 7267: 7254: 7229: 7223: 7184: 7171: 7159:. Retrieved 7145: 7114: 7104: 7072:math/0405498 7062: 7056: 7046: 7037: 7033: 7020: 6976: 6972: 6966: 6918:nlin/0510075 6908: 6904: 6898: 6887:the original 6850: 6846: 6833: 6798: 6794: 6788: 6779: 6769: 6465: 6385: 6347: 6201: 5855: 5740:Hilbert cube 5570: 5551: 5383:direct limit 5380: 5334: 5328: 5261:Chetan Nayak 5246: 5221: 5218: 5191: 5182: 5176: 5168: 5164: 5151: 5143: 5139: 5130: 5127: 4834: 4822: 4816: 4806: 4800: 4794: 4788: 4778: 4772: 4769: 4760:cryptography 4757: 4748: 4740: 4728: 4713: 4705:word problem 4702: 4690: 4676:braid theory 4660: 4648: 4641: 4624: 4621: 4610: 4601: 4595: 4593:is equal to 4586: 4583: 4576: 4569: 4563: 4557: 4551: 4545: 4542: 4422: 4347:presentation 4344: 4334: 4328: 4325: 4169: 4159: 4145: 4141: 4134: 4128: 4121: 4104: 4100: 4096: 4090: 3986: 3832: 3738: 3630: 3462: 3408: 3319: 3310: 3308:and denoted 3302: 3299: 3291: 3282: 3275: 3268: 2988: 2984: 2980: 2975: 2971: 2962: 2956: 2943: 2936: 2924: 2914: 2911: 2903:Interactions 2867: 2857: 2816: 2776:homomorphism 2678:linear order 2671:torsion-free 2579: 2548: 2477:embeds as a 2446: 2435:trefoil knot 2379:cyclic group 2303: 2300:Artin groups 2217: 2002:presentation 1952: 1868: 1694: 1622: 1387: 1259: 1241:braid theory 1238: 1219: 1200: 1188: 1176: 1166: 1155: 1151:string links 1142: 1134: 1130: 1128: 1004: 1002: 832: 690: 524: 499: 480: 450: 430: 427:Applications 382: 367: 327: 285: 283: 258: 256: 224: 222: 190: 186: 180: 173: 170: 167:Introduction 119:(e.g. under 109: 75: 72: 66: 29: 18:Braid theory 8822:Knot theory 8544:Linking no. 8465:Alternating 8266:Conway knot 8246:Carrick mat 8200:Three-twist 8165:Knot theory 8067:Braid group 7832:: 119–126, 7642:: 227–231. 7310:0711.3941v2 7274:: 119–126. 7220:Artin, Emil 7004:10919/24513 6746:Knot theory 5734:and to the 5255:. In 1990, 4709:normal form 4132:. We claim 4054:denote the 3741:isomorphism 3662:modulo its 3298:called the 2920:permutation 2812:defined by 2774:There is a 2707:called the 1232:of certain 1217:from 1891. 1213:'s work on 1185:Braid index 1160:. In 1935, 831:-tuples of 485:concept of 133:knot theory 69:mathematics 8811:Categories 8704:Complement 8668:Tabulation 8625:operations 8549:Polynomial 8539:Link group 8534:Knot group 8497:Invertible 8475:Bridge no. 8457:Invariants 8387:Cinquefoil 8256:Perko pair 8182:Hyperbolic 8108:3D weaving 7968:1 November 7917:PlanetMath 7822:Fox, Ralph 7260:Fox, Ralph 6762:References 6500:. In 1968 5976:unordered 5923:CW complex 5850:See also: 5846:Cohomology 5558:completion 5554:topologies 4682:and every 4112:, it is a 2930:surjective 2769:free group 2431:knot group 1419:the group 1226:Emil Artin 1203:Emil Artin 1172:polynomial 1123:See also: 731:points of 549:copies of 155:); and in 8598:Stick no. 8554:Alexander 8492:Chirality 8437:Solomon's 8397:Septafoil 8324:Satellite 8284:Whitehead 8210:Stevedore 7815:123680847 7799:0020-9910 7758:EMS Press 7715:0711.3785 7611:123442457 7424:119388336 7328:(1996), " 6696:ℓ 6686:ω 6670:ω 6651:ω 6639:ℓ 6635:ω 6620:ℓ 6616:ω 6610:ℓ 6600:ω 6573:≤ 6561:≤ 6544:ω 6431:⁡ 6309:⁡ 6291:∗ 6247:∗ 6218:∗ 6180:≠ 6159:≠ 6131:∈ 6050:⁡ 5821:≠ 5787:∣ 5777:∈ 5501:− 5448:− 5437:send the 5409:→ 5396:: 5369:over the 5300:− 5092:… 5036:− 4990:− 4976:… 4934:… 4891:− 4877:… 4850:σ 4575:→ PSL(2, 4509:− 4460:− 4408:⟩ 4360:⟨ 4295:− 4264:− 4256:↦ 4244:σ 4197:↦ 4185:σ 4144:≅ PSL(2, 4086:generated 3961:− 3952:σ 3939:σ 3927:− 3918:σ 3905:σ 3811:σ 3801:σ 3781:σ 3771:σ 3761:σ 3743:. Define 3587:→ 3582:¯ 3391:→ 3383:− 3372:→ 3359:→ 3351:− 3340:→ 3219:≥ 3208:− 3055:− 3041:… 2795:→ 2725:≥ 2594:∞ 2563:≥ 2481:into the 2283:≥ 2272:− 2241:− 2235:≤ 2229:≤ 2189:σ 2179:σ 2166:σ 2156:σ 2137:σ 2127:σ 2111:σ 2098:σ 2082:σ 2072:σ 2068:∣ 2060:− 2053:σ 2046:… 2034:σ 1932:σ 1905:σ 1878:σ 1846:σ 1836:σ 1826:σ 1813:σ 1803:σ 1793:σ 1763:σ 1753:σ 1743:σ 1730:σ 1720:σ 1710:σ 1671:σ 1661:σ 1648:σ 1638:σ 1608:σ 1537:− 1528:σ 1501:σ 1364:σ 1334:σ 1304:σ 1245:Ralph Fox 1215:monodromy 925:≤ 913:≤ 191:different 157:monodromy 81:(denoted 8783:Category 8653:Mutation 8621:Notation 8574:Kauffman 8487:Brunnian 8480:2-bridge 8349:Knot sum 8280:(12n242) 8086:Practice 8053:Braiding 7858:(2008), 7740:16467487 7627:(1969). 7524:13892069 7478:16998867 7379:18726223 7179:(1974). 7161:6 August 7112:(1974), 7097:14494095 7028:(1935), 7013:21469863 6951:16605655 6883:47710742 6825:14502859 6720:See also 5242:faithful 4792:and let 4782:-folded 4726:, ..., σ 4543:Mapping 4094:, since 4056:subgroup 3250:⟩ 3024:⟨ 2863:, then 2642:; i.e., 2479:subgroup 2199:⟩ 2029:⟨ 1417:generate 902:for all 833:distinct 502:manifold 483:homotopy 286:composed 225:the same 193:braids: 8795:Commons 8714:Fibered 8612:problem 8581:Pretzel 8559:Bracket 8377:Trefoil 8314:L10a140 8274:(11n42) 8268:(11n34) 8236:Endless 8123:Weaving 7848:0150755 7807:0422673 7779:Bibcode 7732:2747726 7648:0242196 7603:0274463 7516:2204494 7470:2196643 7404:Bibcode 7359:Bibcode 7290:0150755 7246:1969218 7138:0375281 7089:1465027 7040:: 73–78 6981:Bibcode 6959:7142834 6943:2231368 6923:Bibcode 6875:1742169 6855:Bibcode 6466:ordered 5972:is the 5738:of the 4820:. Then 4766:Actions 4173:map to 3494:of the 3490:is the 3455:is the 3306:strands 2578:is the 2433:of the 2348:trivial 1197:History 1045:strings 420:inverse 227:braid: 117:-braids 79:strands 8759:Writhe 8729:Ribbon 8564:HOMFLY 8407:Unlink 8367:Unknot 8342:Square 8337:Granny 8060:Theory 7893:  7868:  7846:  7813:  7805:  7797:  7738:  7730:  7646:  7609:  7601:  7561:  7543:Braids 7522:  7514:  7476:  7468:  7422:  7377:  7288:  7244:  7199:  7136:  7126:  7095:  7087:  7011:  6957:  6949:  6941:  6881:  6873:  6823:  6461:, the 5253:linear 4749:CHEVIE 4607:kernel 4423:where 4326:where 4152:cosets 4034:. Let 3664:center 3271:kernel 2987:+1) ∈ 2402:, and 1784:(iib) 1701:(iia) 1135:closed 616:-fold 596:, the 457:anyons 143:where 139:); in 71:, the 8749:Twist 8734:Slice 8689:Berge 8677:Other 8648:Flype 8586:Prime 8569:Jones 8529:Genus 8359:Torus 8173:links 8169:knots 8093:Braid 7811:S2CID 7736:S2CID 7710:arXiv 7704:, 3, 7687:. In 7678:arXiv 7632:(PDF) 7607:S2CID 7520:S2CID 7494:arXiv 7474:S2CID 7448:arXiv 7420:S2CID 7394:arXiv 7375:S2CID 7349:arXiv 7305:arXiv 7242:JSTOR 7093:S2CID 7067:arXiv 6955:S2CID 6913:arXiv 6890:(PDF) 6879:S2CID 6843:(PDF) 6821:S2CID 6803:arXiv 6300:UConf 6041:UConf 5269:SO(3) 5199:is a 4639:with 4635:of a 2640:order 1129:When 1069:up to 1025:with 686:orbit 493:of a 412:group 187:braid 151:(see 145:Artin 8754:Wild 8719:Knot 8623:and 8610:and 8591:list 8422:Hopf 8171:and 7970:2007 7891:ISBN 7866:ISBN 7795:ISSN 7559:ISBN 7197:ISBN 7163:2014 7124:ISBN 7009:PMID 6947:PMID 6567:< 6422:Conf 5856:The 5566:disk 5332:and 5263:and 5137:and 4830:acts 4703:The 4684:link 4680:knot 4668:knot 4664:link 4555:and 4332:and 4163:and 3269:The 2714:For 2444:The 1923:and 1629:(i) 1466:and 1177:The 1158:knot 1139:link 919:< 372:and 8739:Sum 8260:161 8258:(10 7931:'s 7834:doi 7787:doi 7720:doi 7706:102 7591:doi 7551:doi 7504:doi 7458:doi 7412:doi 7367:doi 7345:479 7276:doi 7234:doi 7189:doi 7077:doi 6999:hdl 6989:doi 6977:106 6931:doi 6863:doi 6851:403 6813:doi 6471:of 6413:is 5980:of 5232:is 5189:on 4832:on 4814:of 4674:in 4561:to 4549:to 4088:by 4058:of 3709:of 3635:of 2979:= ( 2922:on 2861:↦ k 2820:↦ 1 2680:on 2669:is 2346:is 1519:or 1095:of 644:on 620:of 529:of 259:not 176:= 4 67:In 8813:: 8439:(4 8424:(2 8409:(0 8399:(7 8389:(5 8379:(3 8369:(0 8301:(6 8286:(5 8250:18 8248:(8 8238:(7 8212:(6 8202:(5 8192:(4 8009:. 7956:. 7944:. 7914:. 7881:; 7844:MR 7842:, 7830:10 7828:, 7809:, 7803:MR 7801:, 7793:, 7785:, 7775:17 7773:, 7756:, 7750:, 7734:, 7728:MR 7726:, 7718:, 7676:, 7668:; 7644:MR 7638:. 7634:. 7605:. 7599:MR 7597:. 7585:. 7557:. 7518:, 7512:MR 7510:, 7502:, 7490:15 7488:, 7472:, 7466:MR 7464:, 7456:, 7444:14 7442:, 7418:, 7410:, 7402:, 7390:44 7388:, 7373:, 7365:, 7357:, 7343:, 7286:MR 7284:. 7272:10 7270:. 7266:. 7240:. 7230:48 7228:. 7211:^ 7195:. 7183:. 7134:MR 7132:, 7122:, 7091:, 7085:MR 7083:, 7075:, 7063:78 7061:, 7032:, 7007:, 6997:, 6987:, 6975:, 6953:, 6945:, 6939:MR 6937:, 6929:, 6921:, 6909:73 6907:, 6877:, 6871:MR 6869:, 6861:, 6849:, 6845:, 6819:. 6811:. 6799:72 6797:. 6778:. 6704:0. 5886:, 5568:. 5373:. 5211:. 5171:+1 5146:+1 4755:. 4731:−1 4670:. 4653:. 4614:. 4581:. 3736:. 3666:, 3394:1. 3281:→ 2983:, 2960:∈ 2942:→ 2740:, 2350:, 2310:. 2004:: 1896:, 1236:. 1153:. 467:. 448:. 380:. 378:στ 163:. 8448:) 8444:1 8433:) 8429:1 8418:) 8414:1 8403:) 8401:1 8393:) 8391:1 8383:) 8381:1 8373:) 8371:1 8310:) 8306:2 8295:) 8291:1 8262:) 8252:) 8242:) 8240:4 8230:3 8228:6 8222:2 8220:6 8216:) 8214:1 8206:) 8204:2 8196:) 8194:1 8175:) 8167:( 8157:e 8150:t 8143:v 8045:e 8038:t 8031:v 8013:. 7998:. 7972:. 7920:. 7836:: 7789:: 7781:: 7722:: 7712:: 7680:: 7650:. 7640:5 7613:. 7593:: 7587:4 7567:. 7553:: 7506:: 7496:: 7460:: 7450:: 7414:: 7406:: 7396:: 7369:: 7361:: 7351:: 7337:2 7332:n 7330:2 7313:. 7307:: 7292:. 7278:: 7248:. 7236:: 7205:. 7191:: 7165:. 7079:: 7069:: 7038:1 7001:: 6991:: 6983:: 6933:: 6925:: 6915:: 6865:: 6857:: 6827:. 6815:: 6805:: 6782:. 6701:= 6693:, 6690:k 6680:k 6677:, 6674:m 6666:+ 6661:k 6658:, 6655:m 6645:m 6642:, 6631:+ 6626:m 6623:, 6607:, 6604:k 6576:n 6570:j 6564:i 6558:1 6551:j 6548:i 6517:n 6513:P 6486:2 6481:R 6463:n 6449:) 6444:2 6439:R 6434:( 6426:n 6399:n 6395:P 6370:Z 6366:2 6362:/ 6357:Z 6333:. 6330:) 6327:) 6322:2 6317:R 6312:( 6304:n 6296:( 6287:H 6283:= 6280:) 6277:) 6274:1 6271:, 6266:n 6262:B 6258:( 6255:K 6252:( 6243:H 6239:= 6236:) 6231:n 6227:B 6223:( 6214:H 6198:. 6186:} 6183:j 6177:i 6167:j 6163:u 6154:i 6150:u 6146:, 6141:2 6136:R 6126:i 6122:u 6118:: 6115:} 6110:n 6106:u 6102:, 6099:. 6096:. 6093:. 6090:, 6085:1 6081:u 6077:{ 6074:{ 6071:= 6068:) 6063:2 6058:R 6053:( 6045:n 6017:n 5995:2 5990:R 5974:n 5958:n 5954:B 5933:G 5909:) 5906:1 5903:, 5900:G 5897:( 5894:K 5867:G 5830:. 5827:} 5824:j 5818:i 5808:j 5804:x 5800:= 5795:i 5791:x 5781:N 5774:i 5770:) 5764:i 5760:x 5756:( 5753:{ 5720:n 5716:P 5691:) 5688:1 5685:, 5682:n 5678:/ 5674:1 5671:, 5668:0 5665:( 5645:) 5642:0 5639:, 5636:n 5632:/ 5628:1 5625:, 5622:0 5619:( 5599:) 5596:n 5592:/ 5588:1 5585:, 5582:0 5579:( 5535:1 5532:+ 5529:n 5525:B 5504:1 5498:n 5476:n 5472:B 5451:1 5445:n 5423:1 5420:+ 5417:n 5413:B 5404:n 5400:B 5393:f 5351:n 5347:B 5335:t 5329:q 5314:2 5310:/ 5306:) 5303:1 5297:n 5294:( 5291:n 5247:n 5224:n 5222:B 5192:X 5185:n 5183:B 5177:x 5169:i 5165:x 5154:i 5152:x 5144:i 5140:x 5133:i 5131:x 5113:. 5109:) 5103:n 5099:x 5095:, 5089:, 5084:2 5081:+ 5078:i 5074:x 5070:, 5065:1 5062:+ 5059:i 5055:x 5049:i 5045:x 5039:1 5031:1 5028:+ 5025:i 5021:x 5017:, 5012:1 5009:+ 5006:i 5002:x 4998:, 4993:1 4987:i 4983:x 4979:, 4973:, 4968:1 4964:x 4959:( 4955:= 4951:) 4945:n 4941:x 4937:, 4931:, 4926:1 4923:+ 4920:i 4916:x 4912:, 4907:i 4903:x 4899:, 4894:1 4888:i 4884:x 4880:, 4874:, 4869:1 4865:x 4860:( 4854:i 4835:X 4825:n 4823:B 4817:G 4807:G 4801:n 4795:X 4789:G 4779:n 4773:n 4743:n 4741:B 4729:n 4724:1 4722:σ 4716:n 4714:B 4691:i 4688:σ 4642:n 4627:n 4625:B 4611:C 4602:c 4596:C 4590:3 4587:B 4579:) 4577:Z 4573:3 4570:B 4564:p 4558:b 4552:v 4546:a 4528:. 4523:] 4517:1 4512:1 4502:1 4497:0 4491:[ 4486:= 4483:p 4479:, 4474:] 4468:0 4463:1 4453:1 4448:0 4442:[ 4437:= 4434:v 4405:1 4402:= 4397:3 4393:p 4389:= 4384:2 4380:v 4374:| 4369:p 4366:, 4363:v 4335:R 4329:L 4309:] 4303:1 4298:1 4288:0 4283:1 4277:[ 4272:= 4267:1 4260:L 4253:C 4248:2 4237:] 4231:1 4226:0 4219:1 4214:1 4208:[ 4203:= 4200:R 4194:C 4189:1 4170:C 4167:2 4165:σ 4160:C 4157:1 4155:σ 4148:) 4146:Z 4142:C 4140:/ 4138:3 4135:B 4129:C 4127:/ 4125:3 4122:B 4110:) 4108:3 4105:B 4103:( 4101:Z 4097:C 4091:c 4071:3 4067:B 4042:C 4020:3 4016:B 3995:c 3972:c 3969:= 3964:1 3956:2 3948:c 3943:2 3935:= 3930:1 3922:1 3914:c 3909:1 3881:c 3859:3 3855:b 3851:= 3846:2 3842:a 3829:. 3815:2 3805:1 3797:= 3794:b 3790:, 3785:1 3775:2 3765:1 3757:= 3754:a 3722:3 3718:B 3693:, 3690:) 3685:3 3681:B 3677:( 3674:Z 3648:3 3644:B 3627:. 3615:) 3611:R 3607:, 3604:2 3601:( 3597:L 3594:S 3591:P 3578:) 3574:R 3570:, 3567:2 3564:( 3560:L 3557:S 3530:) 3526:Z 3522:, 3519:2 3516:( 3512:L 3509:S 3506:P 3476:3 3472:B 3441:3 3437:B 3419:3 3386:1 3380:n 3376:P 3367:n 3363:P 3354:1 3348:n 3344:F 3337:1 3320:n 3313:n 3311:P 3303:n 3294:n 3292:B 3285:n 3283:S 3278:n 3276:B 3254:. 3246:1 3243:= 3238:2 3233:i 3229:s 3225:, 3222:2 3215:| 3211:j 3205:i 3201:| 3190:i 3186:s 3180:j 3176:s 3172:= 3167:j 3163:s 3157:i 3153:s 3149:, 3144:1 3141:+ 3138:i 3134:s 3128:i 3124:s 3118:1 3115:+ 3112:i 3108:s 3104:= 3099:i 3095:s 3089:1 3086:+ 3083:i 3079:s 3073:i 3069:s 3064:| 3058:1 3052:n 3048:s 3044:, 3038:, 3033:1 3029:s 3020:= 3015:n 3011:S 2991:n 2989:S 2985:i 2981:i 2976:i 2972:s 2965:n 2963:B 2957:i 2946:n 2944:S 2939:n 2937:B 2925:n 2915:n 2886:0 2883:= 2880:k 2868:i 2865:σ 2858:i 2855:σ 2842:3 2840:σ 2838:2 2836:σ 2834:1 2832:σ 2830:3 2828:σ 2826:2 2824:σ 2817:i 2814:σ 2799:Z 2790:n 2786:B 2753:n 2749:B 2728:3 2722:n 2711:. 2693:n 2689:B 2673:. 2655:n 2651:B 2624:n 2620:B 2608:. 2590:B 2566:1 2560:n 2549:n 2532:1 2529:+ 2526:n 2522:B 2501:) 2498:1 2495:+ 2492:n 2489:( 2463:n 2459:B 2447:n 2441:. 2415:3 2411:B 2389:Z 2363:2 2359:B 2332:1 2328:B 2286:2 2279:| 2275:j 2269:i 2265:| 2244:2 2238:n 2232:i 2226:1 2203:, 2193:i 2183:j 2175:= 2170:j 2160:i 2152:, 2147:1 2144:+ 2141:i 2131:i 2121:1 2118:+ 2115:i 2107:= 2102:i 2092:1 2089:+ 2086:i 2076:i 2063:1 2057:n 2049:, 2043:, 2038:1 2025:= 2020:n 2016:B 1986:n 1982:B 1961:n 1936:3 1909:2 1882:1 1850:3 1840:2 1830:3 1822:= 1817:2 1807:3 1797:2 1781:, 1767:2 1757:1 1747:2 1739:= 1734:1 1724:2 1714:1 1689:, 1675:1 1665:3 1657:= 1652:3 1642:1 1588:1 1585:+ 1582:i 1562:i 1540:1 1532:i 1505:i 1480:1 1477:+ 1474:i 1454:i 1432:4 1428:B 1401:4 1397:B 1368:3 1338:2 1308:1 1143:n 1131:X 1103:Y 1079:X 1055:Y 1033:n 1013:X 988:Y 968:n 948:Y 928:n 922:j 916:i 910:1 888:j 884:x 880:= 875:i 871:x 848:n 844:X 819:n 799:Y 779:n 759:n 739:X 719:n 699:n 672:n 652:n 628:X 604:n 582:n 578:X 557:X 537:n 511:X 396:4 392:B 374:τ 370:σ 181:n 174:n 115:n 94:n 90:B 76:n 63:. 49:5 45:B 20:)

Index

Braid theory

mathematics
n-braids
ambient isotopy
group operation
§ Introduction
knot theory
Alexander's theorem
mathematical physics
Artin
Yang–Baxter equation
§ Basic properties
monodromy
algebraic geometry
The braid sigma 1−1
The braid sigma 1
The braid sigma 1−1
Another representation of sigma 1−1
Not a braid






group
identity element
inverse
fluid mechanics

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